diff --git a/Libraries/Image/RCTImageLoader.mm b/Libraries/Image/RCTImageLoader.mm
index 9462521cd02565..8bcd347e74c82a 100644
--- a/Libraries/Image/RCTImageLoader.mm
+++ b/Libraries/Image/RCTImageLoader.mm
@@ -966,15 +966,13 @@ - (RCTImageLoaderCancellationBlock)decodeImageData:(NSData *)data
           UIImage *image = RCTDecodeImageWithData(data, size, scale, resizeMode);
 
 #if !TARGET_OS_OSX && RCT_DEV // TODO(macOS GH#774)
-          if ([[self->_bridge devSettings] isDevModeEnabled]) { // TODO(OSS Candidate ISS#2710739)
-            CGSize imagePixelSize = RCTSizeInPixels(image.size, UIImageGetScale(image)); // TODO(macOS GH#774)
-            CGSize screenPixelSize = RCTSizeInPixels(RCTScreenSize(), RCTScreenScale());
-            if (imagePixelSize.width * imagePixelSize.height >
-                screenPixelSize.width * screenPixelSize.height) {
-              RCTLogInfo(@"[PERF ASSETS] Loading image at size %@, which is larger "
-                        "than the screen size %@", NSStringFromCGSize(imagePixelSize),
-                        NSStringFromCGSize(screenPixelSize));
-            }
+          CGSize imagePixelSize = RCTSizeInPixels(image.size, UIImageGetScale(image)); // TODO(macOS GH#774)
+          CGSize screenPixelSize = RCTSizeInPixels(RCTScreenSize(), RCTScreenScale());
+          if (imagePixelSize.width * imagePixelSize.height >
+              screenPixelSize.width * screenPixelSize.height) {
+            RCTLogInfo(@"[PERF ASSETS] Loading image at size %@, which is larger "
+                      "than the screen size %@", NSStringFromCGSize(imagePixelSize),
+                      NSStringFromCGSize(screenPixelSize));
           }
 #endif
 
diff --git a/React/Base/RCTDefines.h b/React/Base/RCTDefines.h
index abef526b774d3d..23be65eb5c64d7 100644
--- a/React/Base/RCTDefines.h
+++ b/React/Base/RCTDefines.h
@@ -42,8 +42,7 @@
 #if DEBUG
 #define RCT_DEV 1
 #else
-// Dev Mode is now enabled or disabled at runtime via the -[RCTDevSettings isDevModeEnabled] property
-#define RCT_DEV 1
+#define RCT_DEV 0
 #endif
 #endif
 
diff --git a/React/Base/RCTRootView.m b/React/Base/RCTRootView.m
index 62c927c250b35e..1d1550fb9babac 100644
--- a/React/Base/RCTRootView.m
+++ b/React/Base/RCTRootView.m
@@ -467,9 +467,7 @@ - (NSMenu *)menuForEvent:(NSEvent *)event
 {
   NSMenu *menu = nil;
 #if __has_include("RCTDevMenu.h") && RCT_DEV
-  if ([[_bridge devSettings] isDevModeEnabled]) {
-    menu = [[_bridge devMenu] menu];
-  }
+  menu = [[_bridge devMenu] menu];
 #endif
   if (menu == nil) {
     menu = [super menuForEvent:event];
diff --git a/React/CoreModules/RCTDevLoadingView.mm b/React/CoreModules/RCTDevLoadingView.mm
index 0a899170c080bd..f340d1806da07d 100644
--- a/React/CoreModules/RCTDevLoadingView.mm
+++ b/React/CoreModules/RCTDevLoadingView.mm
@@ -71,7 +71,7 @@ - (void)setBridge:(RCTBridge *)bridge
                                                name:RCTJavaScriptDidFailToLoadNotification
                                              object:nil];
 
-  if ([[bridge devSettings] isDevModeEnabled] && bridge.loading) { // TODO(OSS Candidate ISS#2710739)
+  if (bridge.loading) {
     [self showWithURL:bridge.bundleURL];
   }
 }
@@ -339,7 +339,7 @@ + (NSString *)moduleName
 + (void)setEnabled:(BOOL)enabled
 {
 }
-- (void)showMessage:(NSString *)message color:(UIColor *)color backgroundColor:(UIColor *)backgroundColor
+- (void)showMessage:(NSString *)message color:(RCTUIColor *)color backgroundColor:(RCTUIColor *)backgroundColor // TODO(macOS GH#774) RCTUIColor
 {
 }
 - (void)showMessage:(NSString *)message withColor:(NSNumber *)color withBackgroundColor:(NSNumber *)backgroundColor
diff --git a/React/CoreModules/RCTDevMenu.mm b/React/CoreModules/RCTDevMenu.mm
index fe9a4f4367de20..24e08980161757 100644
--- a/React/CoreModules/RCTDevMenu.mm
+++ b/React/CoreModules/RCTDevMenu.mm
@@ -511,7 +511,6 @@ - (void)setDefaultJSBundle
 #if TARGET_OS_OSX // [TODO(macOS GH#774)
 - (NSMenu *)menu
 {
-  NSMenu *menu = nil;
   if ([_bridge.devSettings isSecondaryClickToShowDevMenuEnabled]) {
     NSMenu *menu = nil;
     if (_bridge) {
diff --git a/React/CoreModules/RCTDevSettings.h b/React/CoreModules/RCTDevSettings.h
index 77dabfc7da7848..98848cafd4aa55 100644
--- a/React/CoreModules/RCTDevSettings.h
+++ b/React/CoreModules/RCTDevSettings.h
@@ -41,14 +41,6 @@
 
 - (instancetype)initWithDataSource:(id<RCTDevSettingsDataSource>)dataSource;
 
-// [TODO(OSS Candidate ISS#2710739)
-/**
- * Whether Dev Mode is enabled meaning the development tools
- * such as the debug executors, dev menu, red box, etc. are available.
- */
-@property (nonatomic, assign, setter=setDevModeEnabled:) BOOL isDevModeEnabled;
-// ]TODO(OSS Candidate ISS#2710739)
-
 @property (nonatomic, readonly) BOOL isHotLoadingAvailable;
 @property (nonatomic, readonly) BOOL isLiveReloadAvailable;
 @property (nonatomic, readonly) BOOL isRemoteDebuggingAvailable;
diff --git a/React/CoreModules/RCTDevSettings.mm b/React/CoreModules/RCTDevSettings.mm
index 6960ae10d80525..a576c7809d2ac4 100644
--- a/React/CoreModules/RCTDevSettings.mm
+++ b/React/CoreModules/RCTDevSettings.mm
@@ -250,18 +250,6 @@ - (BOOL)isDeviceDebuggingAvailable
 #endif // RCT_ENABLE_INSPECTOR
 }
 
-// [TODO(OSS Candidate ISS#2710739)
-RCT_EXPORT_METHOD(setDevModeEnabled:(BOOL)enabled)
-{
-  [self _updateSettingWithValue:@(enabled) forKey:kRCTDevSettingDevModeEnabled];
-}
-
-- (BOOL)isDevModeEnabled
-{
-  return [[self settingForKey:kRCTDevSettingDevModeEnabled] boolValue];
-}
-// ]TODO(OSS Candidate ISS#2710739)
-
 - (BOOL)isRemoteDebuggingAvailable
 {
   if (RCTTurboModuleEnabled()) {
diff --git a/React/CxxBridge/RCTCxxBridge.mm b/React/CxxBridge/RCTCxxBridge.mm
index fcd6955276d37f..6b86556bb5247f 100644
--- a/React/CxxBridge/RCTCxxBridge.mm
+++ b/React/CxxBridge/RCTCxxBridge.mm
@@ -470,7 +470,7 @@ - (void)start
 #if (RCT_DEV | RCT_ENABLE_LOADING_VIEW) && __has_include(<React/RCTDevLoadingViewProtocol.h>)
         // [TODO(OSS Candidate ISS#2710739)
         // Note: RCTDevLoadingView should have been loaded at this point, so no need to allow lazy loading.
-        if ([weakSelf isValid] && [[weakSelf devSettings] isDevModeEnabled]) {
+        if ([weakSelf isValid]) {
           id<RCTDevLoadingViewProtocol> loadingView = [weakSelf moduleForName:@"DevLoadingView"
                                                         lazilyLoadIfNecessary:YES];
           [loadingView updateProgress:progressData];
@@ -673,9 +673,7 @@ - (void)_initializeBridge:(std::shared_ptr<JSExecutorFactory>)executorFactory
   // This can only be false if the bridge was invalidated before startup completed
   if (_reactInstance) {
 #if RCT_DEV
-    if ([[self devSettings] isDevModeEnabled]) { // TODO(OSS Candidate ISS#2710739)
-      executorFactory = std::make_shared<GetDescAdapter>(self, executorFactory);
-    } // TODO(OSS Candidate ISS#2710739)
+    executorFactory = std::make_shared<GetDescAdapter>(self, executorFactory);
 #endif
 
     [self _initializeBridgeLocked:executorFactory];
@@ -1037,9 +1035,7 @@ - (void)executeSourceCode:(NSData *)sourceCode sync:(BOOL)sync
     [self enqueueApplicationScript:sourceCode url:self.bundleURL onComplete:completion];
   }
 
-  if (self.devSettings.isDevModeEnabled) { // TODO(OSS Candidate ISS#2710739)
-    [self.devSettings setupHMRClientWithBundleURL:self.bundleURL];
-  }
+  [self.devSettings setupHMRClientWithBundleURL:self.bundleURL];
 }
 
 #if RCT_DEV_MENU