diff --git a/change/@react-native-windows-automation-channel-9a3d3918-e883-419d-bebe-513403a6ab7d.json b/change/@react-native-windows-automation-channel-9a3d3918-e883-419d-bebe-513403a6ab7d.json
new file mode 100644
index 00000000000..bef72ff04a8
--- /dev/null
+++ b/change/@react-native-windows-automation-channel-9a3d3918-e883-419d-bebe-513403a6ab7d.json
@@ -0,0 +1,7 @@
+{
+  "type": "patch",
+  "comment": "Use hermes-windows version 0.0.0-2604.21001-94aa5e1d (#16019)",
+  "packageName": "@react-native-windows/automation-channel",
+  "email": "vmorozov@microsoft.com",
+  "dependentChangeType": "patch"
+}
diff --git a/change/react-native-windows-aa6d9881-59cb-49f5-94c8-45793b45e63e.json b/change/react-native-windows-aa6d9881-59cb-49f5-94c8-45793b45e63e.json
new file mode 100644
index 00000000000..cdb7bde3342
--- /dev/null
+++ b/change/react-native-windows-aa6d9881-59cb-49f5-94c8-45793b45e63e.json
@@ -0,0 +1,7 @@
+{
+  "type": "patch",
+  "comment": "Use hermes-windows version 0.0.0-2604.21001-94aa5e1d (#16019)",
+  "packageName": "react-native-windows",
+  "email": "vmorozov@microsoft.com",
+  "dependentChangeType": "patch"
+}
diff --git a/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.chakra.lock.json b/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.chakra.lock.json
index bffe46cffed..9268b5bb0eb 100644
--- a/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.chakra.lock.json
+++ b/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.chakra.lock.json
@@ -29,8 +29,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -72,7 +72,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.lock.json b/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.lock.json
index bffe46cffed..9268b5bb0eb 100644
--- a/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.lock.json
+++ b/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.lock.json
@@ -29,8 +29,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -72,7 +72,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.newarch.lock.json b/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.newarch.lock.json
index de2a5d7fc7c..8753c82f674 100644
--- a/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.newarch.lock.json
+++ b/packages/@react-native-windows/automation-channel/windows/AutomationChannel/packages.newarch.lock.json
@@ -44,8 +44,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -176,7 +176,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/e2e-test-app-fabric/windows/RNTesterApp-Fabric.Package/packages.lock.json b/packages/e2e-test-app-fabric/windows/RNTesterApp-Fabric.Package/packages.lock.json
index 9255d2927ed..eab3b4837db 100644
--- a/packages/e2e-test-app-fabric/windows/RNTesterApp-Fabric.Package/packages.lock.json
+++ b/packages/e2e-test-app-fabric/windows/RNTesterApp-Fabric.Package/packages.lock.json
@@ -14,8 +14,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -176,7 +176,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon": "[1.0.0, )",
@@ -194,7 +194,7 @@
         "type": "Project",
         "dependencies": {
           "AutomationChannel": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.ReactNative": "[1.0.0, )",
           "Microsoft.VCRTForwarders.140": "[1.0.2-rc, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
diff --git a/packages/e2e-test-app-fabric/windows/RNTesterApp-Fabric/packages.lock.json b/packages/e2e-test-app-fabric/windows/RNTesterApp-Fabric/packages.lock.json
index d342688e1c4..c1871b94f71 100644
--- a/packages/e2e-test-app-fabric/windows/RNTesterApp-Fabric/packages.lock.json
+++ b/packages/e2e-test-app-fabric/windows/RNTesterApp-Fabric/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.VCRTForwarders.140": {
         "type": "Direct",
@@ -186,7 +186,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/e2e-test-app/windows/RNTesterApp/packages.chakra.lock.json b/packages/e2e-test-app/windows/RNTesterApp/packages.chakra.lock.json
index 134fbb1efbf..57b7617442a 100644
--- a/packages/e2e-test-app/windows/RNTesterApp/packages.chakra.lock.json
+++ b/packages/e2e-test-app/windows/RNTesterApp/packages.chakra.lock.json
@@ -46,8 +46,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.Net.Native.Compiler": {
         "type": "Transitive",
@@ -197,7 +197,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/e2e-test-app/windows/RNTesterApp/packages.lock.json b/packages/e2e-test-app/windows/RNTesterApp/packages.lock.json
index 2bc8e4de21e..01976d9682b 100644
--- a/packages/e2e-test-app/windows/RNTesterApp/packages.lock.json
+++ b/packages/e2e-test-app/windows/RNTesterApp/packages.lock.json
@@ -4,9 +4,9 @@
     "UAP,Version=v10.0.17763": {
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.NETCore.UniversalWindowsPlatform": {
         "type": "Direct",
@@ -198,7 +198,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/integration-test-app/windows/InteropTestModuleCS/packages.chakra.lock.json b/packages/integration-test-app/windows/InteropTestModuleCS/packages.chakra.lock.json
index b55f41a4e36..9aaf8b84a70 100644
--- a/packages/integration-test-app/windows/InteropTestModuleCS/packages.chakra.lock.json
+++ b/packages/integration-test-app/windows/InteropTestModuleCS/packages.chakra.lock.json
@@ -26,8 +26,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.Net.Native.Compiler": {
         "type": "Transitive",
@@ -178,7 +178,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/integration-test-app/windows/InteropTestModuleCS/packages.lock.json b/packages/integration-test-app/windows/InteropTestModuleCS/packages.lock.json
index b55f41a4e36..9aaf8b84a70 100644
--- a/packages/integration-test-app/windows/InteropTestModuleCS/packages.lock.json
+++ b/packages/integration-test-app/windows/InteropTestModuleCS/packages.lock.json
@@ -26,8 +26,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.Net.Native.Compiler": {
         "type": "Transitive",
@@ -178,7 +178,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/integration-test-app/windows/integrationtest/packages.chakra.lock.json b/packages/integration-test-app/windows/integrationtest/packages.chakra.lock.json
index f5ff796df24..139fbf83cbc 100644
--- a/packages/integration-test-app/windows/integrationtest/packages.chakra.lock.json
+++ b/packages/integration-test-app/windows/integrationtest/packages.chakra.lock.json
@@ -29,8 +29,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.Net.Native.Compiler": {
         "type": "Transitive",
@@ -199,7 +199,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/integration-test-app/windows/integrationtest/packages.lock.json b/packages/integration-test-app/windows/integrationtest/packages.lock.json
index a99df8c35ca..19d2595bc11 100644
--- a/packages/integration-test-app/windows/integrationtest/packages.lock.json
+++ b/packages/integration-test-app/windows/integrationtest/packages.lock.json
@@ -4,9 +4,9 @@
     "native,Version=v0.0": {
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.UI.Xaml": {
         "type": "Direct",
@@ -200,7 +200,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/playground/windows/PlaygroundNativeModules/packages.lock.json b/packages/playground/windows/PlaygroundNativeModules/packages.lock.json
index bffe46cffed..9268b5bb0eb 100644
--- a/packages/playground/windows/PlaygroundNativeModules/packages.lock.json
+++ b/packages/playground/windows/PlaygroundNativeModules/packages.lock.json
@@ -29,8 +29,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -72,7 +72,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/playground/windows/playground-composition.Package/packages.experimentalwinui3.lock.json b/packages/playground/windows/playground-composition.Package/packages.experimentalwinui3.lock.json
index 67d042b5058..8bf06a45582 100644
--- a/packages/playground/windows/playground-composition.Package/packages.experimentalwinui3.lock.json
+++ b/packages/playground/windows/playground-composition.Package/packages.experimentalwinui3.lock.json
@@ -14,8 +14,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -167,7 +167,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon": "[1.0.0, )",
@@ -177,7 +177,7 @@
       "playground-composition": {
         "type": "Project",
         "dependencies": {
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.ReactNative": "[1.0.0, )",
           "Microsoft.VCRTForwarders.140": "[1.0.2-rc, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
diff --git a/packages/playground/windows/playground-composition.Package/packages.lock.json b/packages/playground/windows/playground-composition.Package/packages.lock.json
index 67d042b5058..8bf06a45582 100644
--- a/packages/playground/windows/playground-composition.Package/packages.lock.json
+++ b/packages/playground/windows/playground-composition.Package/packages.lock.json
@@ -14,8 +14,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -167,7 +167,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon": "[1.0.0, )",
@@ -177,7 +177,7 @@
       "playground-composition": {
         "type": "Project",
         "dependencies": {
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.ReactNative": "[1.0.0, )",
           "Microsoft.VCRTForwarders.140": "[1.0.2-rc, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
diff --git a/packages/playground/windows/playground-composition/packages.experimentalwinui3.lock.json b/packages/playground/windows/playground-composition/packages.experimentalwinui3.lock.json
index 17927d4017a..92d63eae599 100644
--- a/packages/playground/windows/playground-composition/packages.experimentalwinui3.lock.json
+++ b/packages/playground/windows/playground-composition/packages.experimentalwinui3.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.VCRTForwarders.140": {
         "type": "Direct",
@@ -177,7 +177,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/playground/windows/playground-composition/packages.lock.json b/packages/playground/windows/playground-composition/packages.lock.json
index 17927d4017a..92d63eae599 100644
--- a/packages/playground/windows/playground-composition/packages.lock.json
+++ b/packages/playground/windows/playground-composition/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.VCRTForwarders.140": {
         "type": "Direct",
@@ -177,7 +177,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/playground/windows/playground/packages.lock.json b/packages/playground/windows/playground/packages.lock.json
index cc375261404..32425cb3201 100644
--- a/packages/playground/windows/playground/packages.lock.json
+++ b/packages/playground/windows/playground/packages.lock.json
@@ -4,9 +4,9 @@
     "native,Version=v0.0": {
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.UI.Xaml": {
         "type": "Direct",
@@ -73,7 +73,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/sample-app-fabric/windows/SampleAppFabric.Package/packages.lock.json b/packages/sample-app-fabric/windows/SampleAppFabric.Package/packages.lock.json
index ca817ea95ea..31ec9b9e6b8 100644
--- a/packages/sample-app-fabric/windows/SampleAppFabric.Package/packages.lock.json
+++ b/packages/sample-app-fabric/windows/SampleAppFabric.Package/packages.lock.json
@@ -14,8 +14,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -167,7 +167,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon": "[1.0.0, )",
@@ -184,7 +184,7 @@
       "sampleappfabric": {
         "type": "Project",
         "dependencies": {
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.ReactNative": "[1.0.0, )",
           "Microsoft.VCRTForwarders.140": "[1.0.2-rc, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
diff --git a/packages/sample-app-fabric/windows/SampleAppFabric/packages.lock.json b/packages/sample-app-fabric/windows/SampleAppFabric/packages.lock.json
index f9b0a00ccc6..5605161df2c 100644
--- a/packages/sample-app-fabric/windows/SampleAppFabric/packages.lock.json
+++ b/packages/sample-app-fabric/windows/SampleAppFabric/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.VCRTForwarders.140": {
         "type": "Direct",
@@ -177,7 +177,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/sample-apps/windows/SampleAppCPP/packages.lock.json b/packages/sample-apps/windows/SampleAppCPP/packages.lock.json
index 978ebaeb77b..133a1781bb0 100644
--- a/packages/sample-apps/windows/SampleAppCPP/packages.lock.json
+++ b/packages/sample-apps/windows/SampleAppCPP/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.UI.Xaml": {
         "type": "Direct",
@@ -186,7 +186,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/sample-apps/windows/SampleAppCS/packages.lock.json b/packages/sample-apps/windows/SampleAppCS/packages.lock.json
index 5b29420dc81..17610e1483b 100644
--- a/packages/sample-apps/windows/SampleAppCS/packages.lock.json
+++ b/packages/sample-apps/windows/SampleAppCS/packages.lock.json
@@ -4,9 +4,9 @@
     "UAP,Version=v10.0.17763": {
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.NETCore.UniversalWindowsPlatform": {
         "type": "Direct",
@@ -180,7 +180,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/sample-apps/windows/SampleLibraryCPP/packages.lock.json b/packages/sample-apps/windows/SampleLibraryCPP/packages.lock.json
index bffe46cffed..9268b5bb0eb 100644
--- a/packages/sample-apps/windows/SampleLibraryCPP/packages.lock.json
+++ b/packages/sample-apps/windows/SampleLibraryCPP/packages.lock.json
@@ -29,8 +29,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -72,7 +72,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/sample-apps/windows/SampleLibraryCS/packages.lock.json b/packages/sample-apps/windows/SampleLibraryCS/packages.lock.json
index b55f41a4e36..9aaf8b84a70 100644
--- a/packages/sample-apps/windows/SampleLibraryCS/packages.lock.json
+++ b/packages/sample-apps/windows/SampleLibraryCS/packages.lock.json
@@ -26,8 +26,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.Net.Native.Compiler": {
         "type": "Transitive",
@@ -178,7 +178,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/sample-custom-component/windows/SampleCustomComponent/packages.experimentalwinui3.lock.json b/packages/sample-custom-component/windows/SampleCustomComponent/packages.experimentalwinui3.lock.json
index 5f2b79cf1f9..19d4f84d7ea 100644
--- a/packages/sample-custom-component/windows/SampleCustomComponent/packages.experimentalwinui3.lock.json
+++ b/packages/sample-custom-component/windows/SampleCustomComponent/packages.experimentalwinui3.lock.json
@@ -44,8 +44,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -176,7 +176,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/packages/sample-custom-component/windows/SampleCustomComponent/packages.lock.json b/packages/sample-custom-component/windows/SampleCustomComponent/packages.lock.json
index 5f2b79cf1f9..19d4f84d7ea 100644
--- a/packages/sample-custom-component/windows/SampleCustomComponent/packages.lock.json
+++ b/packages/sample-custom-component/windows/SampleCustomComponent/packages.lock.json
@@ -44,8 +44,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -176,7 +176,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Desktop.ABITests/packages.experimentalwinui3.lock.json b/vnext/Desktop.ABITests/packages.experimentalwinui3.lock.json
index 0093c6d7d34..6e43ef3bd4c 100644
--- a/vnext/Desktop.ABITests/packages.experimentalwinui3.lock.json
+++ b/vnext/Desktop.ABITests/packages.experimentalwinui3.lock.json
@@ -26,8 +26,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -186,7 +186,7 @@
           "Common.win32": "[1.0.0, )",
           "Folly.win32": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon.win32": "[1.0.0, )",
@@ -197,7 +197,7 @@
       "react.windows.desktop.dll": {
         "type": "Project",
         "dependencies": {
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "React.Windows.Desktop": "[1.0.0, )",
           "ReactNative.V8Jsi.Windows": "[0.71.8, )",
diff --git a/vnext/Desktop.ABITests/packages.lock.json b/vnext/Desktop.ABITests/packages.lock.json
index 0093c6d7d34..6e43ef3bd4c 100644
--- a/vnext/Desktop.ABITests/packages.lock.json
+++ b/vnext/Desktop.ABITests/packages.lock.json
@@ -26,8 +26,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -186,7 +186,7 @@
           "Common.win32": "[1.0.0, )",
           "Folly.win32": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon.win32": "[1.0.0, )",
@@ -197,7 +197,7 @@
       "react.windows.desktop.dll": {
         "type": "Project",
         "dependencies": {
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "React.Windows.Desktop": "[1.0.0, )",
           "ReactNative.V8Jsi.Windows": "[0.71.8, )",
diff --git a/vnext/Desktop.DLL/packages.experimentalwinui3.lock.json b/vnext/Desktop.DLL/packages.experimentalwinui3.lock.json
index bd183695418..dcf0fc4df41 100644
--- a/vnext/Desktop.DLL/packages.experimentalwinui3.lock.json
+++ b/vnext/Desktop.DLL/packages.experimentalwinui3.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.GitHub": {
         "type": "Direct",
@@ -178,7 +178,7 @@
           "Common.win32": "[1.0.0, )",
           "Folly.win32": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon.win32": "[1.0.0, )",
diff --git a/vnext/Desktop.DLL/packages.lock.json b/vnext/Desktop.DLL/packages.lock.json
index bd183695418..dcf0fc4df41 100644
--- a/vnext/Desktop.DLL/packages.lock.json
+++ b/vnext/Desktop.DLL/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.GitHub": {
         "type": "Direct",
@@ -178,7 +178,7 @@
           "Common.win32": "[1.0.0, )",
           "Folly.win32": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon.win32": "[1.0.0, )",
diff --git a/vnext/Desktop.IntegrationTests/packages.experimentalwinui3.lock.json b/vnext/Desktop.IntegrationTests/packages.experimentalwinui3.lock.json
index 157bc71dc16..fdcc74ca577 100644
--- a/vnext/Desktop.IntegrationTests/packages.experimentalwinui3.lock.json
+++ b/vnext/Desktop.IntegrationTests/packages.experimentalwinui3.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.Windows.CppWinRT": {
         "type": "Direct",
@@ -183,7 +183,7 @@
           "Common.win32": "[1.0.0, )",
           "Folly.win32": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon.win32": "[1.0.0, )",
@@ -194,7 +194,7 @@
       "react.windows.desktop.dll": {
         "type": "Project",
         "dependencies": {
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "React.Windows.Desktop": "[1.0.0, )",
           "ReactNative.V8Jsi.Windows": "[0.71.8, )",
diff --git a/vnext/Desktop.IntegrationTests/packages.lock.json b/vnext/Desktop.IntegrationTests/packages.lock.json
index 157bc71dc16..fdcc74ca577 100644
--- a/vnext/Desktop.IntegrationTests/packages.lock.json
+++ b/vnext/Desktop.IntegrationTests/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.Windows.CppWinRT": {
         "type": "Direct",
@@ -183,7 +183,7 @@
           "Common.win32": "[1.0.0, )",
           "Folly.win32": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon.win32": "[1.0.0, )",
@@ -194,7 +194,7 @@
       "react.windows.desktop.dll": {
         "type": "Project",
         "dependencies": {
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "React.Windows.Desktop": "[1.0.0, )",
           "ReactNative.V8Jsi.Windows": "[0.71.8, )",
diff --git a/vnext/Desktop.UnitTests/packages.experimentalwinui3.lock.json b/vnext/Desktop.UnitTests/packages.experimentalwinui3.lock.json
index 4a4be4f0a4d..2e8e7e34c71 100644
--- a/vnext/Desktop.UnitTests/packages.experimentalwinui3.lock.json
+++ b/vnext/Desktop.UnitTests/packages.experimentalwinui3.lock.json
@@ -21,8 +21,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -181,7 +181,7 @@
           "Common.win32": "[1.0.0, )",
           "Folly.win32": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon.win32": "[1.0.0, )",
diff --git a/vnext/Desktop.UnitTests/packages.lock.json b/vnext/Desktop.UnitTests/packages.lock.json
index 4a4be4f0a4d..2e8e7e34c71 100644
--- a/vnext/Desktop.UnitTests/packages.lock.json
+++ b/vnext/Desktop.UnitTests/packages.lock.json
@@ -21,8 +21,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -181,7 +181,7 @@
           "Common.win32": "[1.0.0, )",
           "Folly.win32": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon.win32": "[1.0.0, )",
diff --git a/vnext/Desktop/packages.experimentalwinui3.lock.json b/vnext/Desktop/packages.experimentalwinui3.lock.json
index 0c68dd61b9e..661d10e7e05 100644
--- a/vnext/Desktop/packages.experimentalwinui3.lock.json
+++ b/vnext/Desktop/packages.experimentalwinui3.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.GitHub": {
         "type": "Direct",
diff --git a/vnext/Desktop/packages.lock.json b/vnext/Desktop/packages.lock.json
index 0c68dd61b9e..661d10e7e05 100644
--- a/vnext/Desktop/packages.lock.json
+++ b/vnext/Desktop/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.GitHub": {
         "type": "Direct",
diff --git a/vnext/FollyWin32/packages.lock.json b/vnext/FollyWin32/packages.lock.json
deleted file mode 100644
index 4d7885182d0..00000000000
--- a/vnext/FollyWin32/packages.lock.json
+++ /dev/null
@@ -1,26 +0,0 @@
-{
-  "version": 1,
-  "dependencies": {
-    "native,Version=v0.0": {
-      "boost": {
-        "type": "Transitive",
-        "resolved": "1.84.0",
-        "contentHash": "4el2YP3cNJDVFPdzOso+LxGvdWP2rHxML4siq8VdonNypW2m4q503tHfCj6vK0L1UfxioE2hpFGb4ITEua73tg=="
-      },
-      "fmt.win32": {
-        "type": "Project"
-      },
-      "folly.win32": {
-        "type": "Project",
-        "dependencies": {
-          "boost": "[1.84.0, )",
-          "fmt.win32": "[1.0.0, )"
-        }
-      }
-    },
-    "native,Version=v0.0/win": {},
-    "native,Version=v0.0/win-arm64": {},
-    "native,Version=v0.0/win-x64": {},
-    "native,Version=v0.0/win-x86": {}
-  }
-}
\ No newline at end of file
diff --git a/vnext/Microsoft.ReactNative.CsWinRT/packages.experimentalwinui3.lock.json b/vnext/Microsoft.ReactNative.CsWinRT/packages.experimentalwinui3.lock.json
index 75430593898..94026b2f4ad 100644
--- a/vnext/Microsoft.ReactNative.CsWinRT/packages.experimentalwinui3.lock.json
+++ b/vnext/Microsoft.ReactNative.CsWinRT/packages.experimentalwinui3.lock.json
@@ -37,8 +37,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -169,7 +169,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Microsoft.ReactNative.CsWinRT/packages.lock.json b/vnext/Microsoft.ReactNative.CsWinRT/packages.lock.json
index 75430593898..94026b2f4ad 100644
--- a/vnext/Microsoft.ReactNative.CsWinRT/packages.lock.json
+++ b/vnext/Microsoft.ReactNative.CsWinRT/packages.lock.json
@@ -37,8 +37,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -169,7 +169,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Microsoft.ReactNative.IntegrationTests/packages.experimentalwinui3.lock.json b/vnext/Microsoft.ReactNative.IntegrationTests/packages.experimentalwinui3.lock.json
index 9e4f116c933..2efb827f449 100644
--- a/vnext/Microsoft.ReactNative.IntegrationTests/packages.experimentalwinui3.lock.json
+++ b/vnext/Microsoft.ReactNative.IntegrationTests/packages.experimentalwinui3.lock.json
@@ -33,8 +33,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -84,7 +84,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Microsoft.ReactNative.IntegrationTests/packages.lock.json b/vnext/Microsoft.ReactNative.IntegrationTests/packages.lock.json
index 9e4f116c933..2efb827f449 100644
--- a/vnext/Microsoft.ReactNative.IntegrationTests/packages.lock.json
+++ b/vnext/Microsoft.ReactNative.IntegrationTests/packages.lock.json
@@ -33,8 +33,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -84,7 +84,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Microsoft.ReactNative.IntegrationTests/packages.newarch.experimentalwinui3.lock.json b/vnext/Microsoft.ReactNative.IntegrationTests/packages.newarch.experimentalwinui3.lock.json
index fb8e2581f47..dc823ae3e7b 100644
--- a/vnext/Microsoft.ReactNative.IntegrationTests/packages.newarch.experimentalwinui3.lock.json
+++ b/vnext/Microsoft.ReactNative.IntegrationTests/packages.newarch.experimentalwinui3.lock.json
@@ -50,8 +50,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -182,7 +182,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Microsoft.ReactNative.IntegrationTests/packages.newarch.lock.json b/vnext/Microsoft.ReactNative.IntegrationTests/packages.newarch.lock.json
index fb8e2581f47..dc823ae3e7b 100644
--- a/vnext/Microsoft.ReactNative.IntegrationTests/packages.newarch.lock.json
+++ b/vnext/Microsoft.ReactNative.IntegrationTests/packages.newarch.lock.json
@@ -50,8 +50,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -182,7 +182,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Microsoft.ReactNative.Managed.IntegrationTests/packages.lock.json b/vnext/Microsoft.ReactNative.Managed.IntegrationTests/packages.lock.json
index 1ce21b18be7..967eacaf2a9 100644
--- a/vnext/Microsoft.ReactNative.Managed.IntegrationTests/packages.lock.json
+++ b/vnext/Microsoft.ReactNative.Managed.IntegrationTests/packages.lock.json
@@ -56,8 +56,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.Net.Native.Compiler": {
         "type": "Transitive",
@@ -332,7 +332,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Microsoft.ReactNative.Managed.UnitTests/packages.lock.json b/vnext/Microsoft.ReactNative.Managed.UnitTests/packages.lock.json
index 1ce21b18be7..967eacaf2a9 100644
--- a/vnext/Microsoft.ReactNative.Managed.UnitTests/packages.lock.json
+++ b/vnext/Microsoft.ReactNative.Managed.UnitTests/packages.lock.json
@@ -56,8 +56,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.Net.Native.Compiler": {
         "type": "Transitive",
@@ -332,7 +332,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Microsoft.ReactNative.Managed/packages.lock.json b/vnext/Microsoft.ReactNative.Managed/packages.lock.json
index 81ea701975f..965b497d0ab 100644
--- a/vnext/Microsoft.ReactNative.Managed/packages.lock.json
+++ b/vnext/Microsoft.ReactNative.Managed/packages.lock.json
@@ -36,8 +36,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.Net.Native.Compiler": {
         "type": "Transitive",
@@ -179,7 +179,7 @@
         "dependencies": {
           "Common": "[1.0.0, )",
           "Folly": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.UI.Xaml": "[2.8.0, )",
           "ReactCommon": "[1.0.0, )",
diff --git a/vnext/Microsoft.ReactNative/packages.chakra.lock.json b/vnext/Microsoft.ReactNative/packages.chakra.lock.json
index 741a7cdadbf..11c57de990f 100644
--- a/vnext/Microsoft.ReactNative/packages.chakra.lock.json
+++ b/vnext/Microsoft.ReactNative/packages.chakra.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.GitHub": {
         "type": "Direct",
diff --git a/vnext/Microsoft.ReactNative/packages.experimentalwinui3.lock.json b/vnext/Microsoft.ReactNative/packages.experimentalwinui3.lock.json
index 741a7cdadbf..11c57de990f 100644
--- a/vnext/Microsoft.ReactNative/packages.experimentalwinui3.lock.json
+++ b/vnext/Microsoft.ReactNative/packages.experimentalwinui3.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.GitHub": {
         "type": "Direct",
diff --git a/vnext/Microsoft.ReactNative/packages.lock.json b/vnext/Microsoft.ReactNative/packages.lock.json
index 741a7cdadbf..11c57de990f 100644
--- a/vnext/Microsoft.ReactNative/packages.lock.json
+++ b/vnext/Microsoft.ReactNative/packages.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.GitHub": {
         "type": "Direct",
diff --git a/vnext/Microsoft.ReactNative/packages.newarch.experimentalwinui3.lock.json b/vnext/Microsoft.ReactNative/packages.newarch.experimentalwinui3.lock.json
index a90c2984103..aef3bb6683f 100644
--- a/vnext/Microsoft.ReactNative/packages.newarch.experimentalwinui3.lock.json
+++ b/vnext/Microsoft.ReactNative/packages.newarch.experimentalwinui3.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.GitHub": {
         "type": "Direct",
diff --git a/vnext/Microsoft.ReactNative/packages.newarch.lock.json b/vnext/Microsoft.ReactNative/packages.newarch.lock.json
index a90c2984103..aef3bb6683f 100644
--- a/vnext/Microsoft.ReactNative/packages.newarch.lock.json
+++ b/vnext/Microsoft.ReactNative/packages.newarch.lock.json
@@ -10,9 +10,9 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Direct",
-        "requested": "[0.0.0-2511.7001-d7ca19b3, )",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "requested": "[0.0.0-2604.21001-94aa5e1d, )",
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.GitHub": {
         "type": "Direct",
diff --git a/vnext/PropertySheets/JSEngine.props b/vnext/PropertySheets/JSEngine.props
index 887e3f0bd96..829633b5e5f 100644
--- a/vnext/PropertySheets/JSEngine.props
+++ b/vnext/PropertySheets/JSEngine.props
@@ -6,7 +6,7 @@
     <!-- Enabling this will (1) Include hermes glues in the Microsoft.ReactNative binaries AND (2) Make hermes the default engine -->
     <UseHermes Condition="'$(UseHermes)' == ''">true</UseHermes>
     <!-- This will be true if (1) the client want to use hermes by setting UseHermes to true OR (2) We are building for UWP where dynamic switching is enabled -->
-    <HermesVersion Condition="'$(HermesVersion)' == ''">0.0.0-2511.7001-d7ca19b3</HermesVersion>
+    <HermesVersion Condition="'$(HermesVersion)' == ''">0.0.0-2604.21001-94aa5e1d</HermesVersion>
     <HermesPackageName Condition="'$(HermesPackageName)' == ''">Microsoft.JavaScript.Hermes</HermesPackageName>
     <HermesPackage Condition="'$(HermesPackage)' == '' And Exists('$(PkgMicrosoft_JavaScript_Hermes)')">$(PkgMicrosoft_JavaScript_Hermes)</HermesPackage>
     <HermesPackage Condition="'$(HermesPackage)' == ''">$(NuGetPackageRoot)\$(HermesPackageName)\$(HermesVersion)</HermesPackage>
diff --git a/vnext/ReactCommon.UnitTests/packages.experimentalwinui3.lock.json b/vnext/ReactCommon.UnitTests/packages.experimentalwinui3.lock.json
index 6f133559530..23e1b5237b0 100644
--- a/vnext/ReactCommon.UnitTests/packages.experimentalwinui3.lock.json
+++ b/vnext/ReactCommon.UnitTests/packages.experimentalwinui3.lock.json
@@ -27,8 +27,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -182,7 +182,7 @@
           "Common.win32": "[1.0.0, )",
           "Folly.win32": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon.win32": "[1.0.0, )",
diff --git a/vnext/ReactCommon.UnitTests/packages.lock.json b/vnext/ReactCommon.UnitTests/packages.lock.json
index 6f133559530..23e1b5237b0 100644
--- a/vnext/ReactCommon.UnitTests/packages.lock.json
+++ b/vnext/ReactCommon.UnitTests/packages.lock.json
@@ -27,8 +27,8 @@
       },
       "Microsoft.JavaScript.Hermes": {
         "type": "Transitive",
-        "resolved": "0.0.0-2511.7001-d7ca19b3",
-        "contentHash": "/EGy/gbTWpFZPZ4Z81QxbGQxpZhqiOE3qrnSokZRgXAyHivl15s7zZkRLOy9daDmVyEfanq7YBCOMi0ha58uQA=="
+        "resolved": "0.0.0-2604.21001-94aa5e1d",
+        "contentHash": "8eHA3O043jIeK7E1gJbzgsdujaDTIBwLSl6pZj7CdQl+ryFqaW88XVU9ogWJPxk5lR2T4cU/OlEJfZynqoyYew=="
       },
       "Microsoft.SourceLink.Common": {
         "type": "Transitive",
@@ -182,7 +182,7 @@
           "Common.win32": "[1.0.0, )",
           "Folly.win32": "[1.0.0, )",
           "FollyWin32": "[1.0.0, )",
-          "Microsoft.JavaScript.Hermes": "[0.0.0-2511.7001-d7ca19b3, )",
+          "Microsoft.JavaScript.Hermes": "[0.0.0-2604.21001-94aa5e1d, )",
           "Microsoft.SourceLink.GitHub": "[1.1.1, )",
           "Microsoft.WindowsAppSDK": "[1.8.251106002, )",
           "ReactCommon.win32": "[1.0.0, )",
diff --git a/vnext/fmt/packages.lock.json b/vnext/fmt/packages.lock.json
deleted file mode 100644
index 984043a7c4d..00000000000
--- a/vnext/fmt/packages.lock.json
+++ /dev/null
@@ -1,10 +0,0 @@
-{
-  "version": 1,
-  "dependencies": {
-    "native,Version=v0.0": {},
-    "native,Version=v0.0/win": {},
-    "native,Version=v0.0/win-arm64": {},
-    "native,Version=v0.0/win-x64": {},
-    "native,Version=v0.0/win-x86": {}
-  }
-}
\ No newline at end of file