diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSupportManagerBase.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSupportManagerBase.java
index 072c46ef18a..a1b207897ce 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSupportManagerBase.java
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSupportManagerBase.java
@@ -223,6 +223,7 @@ public abstract class DevSupportManagerBase implements DevSupportManager {
     if (e instanceof JavascriptException) {
       FLog.e(ReactConstants.TAG, "Exception in native call from JS", e);
       showNewError(
+          // NULLSAFE_FIXME[Nullable Dereference]
           e.getMessage().toString(), new StackFrame[] {}, JSEXCEPTION_ERROR_COOKIE, ErrorType.JS);
     } else {
       showNewJavaError(message.toString(), e);
@@ -230,6 +231,7 @@ public abstract class DevSupportManagerBase implements DevSupportManager {
   }
 
   @Override
+  // NULLSAFE_FIXME[Inconsistent Subclass Parameter Annotation]
   public void showNewJavaError(@Nullable String message, Throwable e) {
     FLog.e(ReactConstants.TAG, "Exception in native call", e);
     showNewError(
@@ -242,16 +244,19 @@ public abstract class DevSupportManagerBase implements DevSupportManager {
    * called.
    */
   @Override
+  // NULLSAFE_FIXME[Inconsistent Subclass Parameter Annotation]
   public void addCustomDevOption(String optionName, DevOptionHandler optionHandler) {
     mCustomDevOptions.put(optionName, optionHandler);
   }
 
   @Override
+  // NULLSAFE_FIXME[Inconsistent Subclass Parameter Annotation]
   public void showNewJSError(String message, ReadableArray details, int errorCookie) {
     showNewError(message, StackTraceHelper.convertJsStackTrace(details), errorCookie, ErrorType.JS);
   }
 
   @Override
+  // NULLSAFE_FIXME[Inconsistent Subclass Parameter Annotation]
   public void registerErrorCustomizer(ErrorCustomizer errorCustomizer) {
     if (mErrorCustomizers == null) {
       mErrorCustomizers = new ArrayList<>();
@@ -260,6 +265,7 @@ public abstract class DevSupportManagerBase implements DevSupportManager {
   }
 
   @Override
+  // NULLSAFE_FIXME[Inconsistent Subclass Parameter Annotation]
   public Pair<String, StackFrame[]> processErrorCustomizers(Pair<String, StackFrame[]> errorInfo) {
     if (mErrorCustomizers != null) {
       for (ErrorCustomizer errorCustomizer : mErrorCustomizers) {
@@ -281,10 +287,12 @@ public abstract class DevSupportManagerBase implements DevSupportManager {
     mRedBoxSurfaceDelegate.hide();
   }
 
+  // NULLSAFE_FIXME[Inconsistent Subclass Parameter Annotation]
   public @Nullable View createRootView(String appKey) {
     return mReactInstanceDevHelper.createRootView(appKey);
   }
 
+  // NULLSAFE_FIXME[Inconsistent Subclass Parameter Annotation]
   public void destroyRootView(View rootView) {
     mReactInstanceDevHelper.destroyRootView(rootView);
   }
@@ -518,12 +526,14 @@ public abstract class DevSupportManagerBase implements DevSupportManager {
     mDevOptionsDialog =
         new AlertDialog.Builder(context)
             .setCustomTitle(header)
+            // NULLSAFE_FIXME[Not Vetted Third-Party]
             .setAdapter(
                 adapter,
                 (dialog, which) -> {
                   optionHandlers[which].onOptionSelected();
                   mDevOptionsDialog = null;
                 })
+            // NULLSAFE_FIXME[Not Vetted Third-Party]
             .setOnCancelListener(dialog -> mDevOptionsDialog = null)
             .create();
     mDevOptionsDialog.show();
@@ -538,6 +548,7 @@ public abstract class DevSupportManagerBase implements DevSupportManager {
     try {
       return getReactInstanceDevHelper().getJavaScriptExecutorFactory().toString();
     } catch (IllegalStateException e) {
+      // NULLSAFE_FIXME[Return Not Nullable]
       return null;
     }
   }
@@ -624,6 +635,7 @@ public abstract class DevSupportManagerBase implements DevSupportManager {
       try {
         String packageName = mApplicationContext.getPackageName();
         PackageInfo thisPackage =
+            // NULLSAFE_FIXME[Nullable Dereference]
             mApplicationContext.getPackageManager().getPackageInfo(packageName, 0);
         if (mJSBundleDownloadedFile.lastModified() > thisPackage.lastUpdateTime) {
           // Base APK has not been updated since we downloaded JS, but if app is using exopackage
@@ -663,6 +675,7 @@ public abstract class DevSupportManagerBase implements DevSupportManager {
     if (mCurrentReactContext != null) {
       try {
         URL sourceUrl = new URL(getSourceUrl());
+        // NULLSAFE_FIXME[Nullable Dereference]
         String path = sourceUrl.getPath().substring(1); // strip initial slash in path
         String host = sourceUrl.getHost();
         String scheme = sourceUrl.getProtocol();
@@ -785,6 +798,7 @@ public abstract class DevSupportManagerBase implements DevSupportManager {
                 }
 
                 @Override
+                // NULLSAFE_FIXME[Inconsistent Subclass Parameter Annotation]
                 public void onFailure(Exception cause) {
                   UiThreadUtil.runOnUiThread(
                       DevSupportManagerBase.this::hideSplitBundleDevLoadingView);
@@ -793,6 +807,7 @@ public abstract class DevSupportManagerBase implements DevSupportManager {
               },
               bundleFile,
               bundleUrl,
+              // NULLSAFE_FIXME[Parameter Not Nullable]
               null);
         });
   }
@@ -821,6 +836,7 @@ public abstract class DevSupportManagerBase implements DevSupportManager {
   }
 
   @Override
+  // NULLSAFE_FIXME[Inconsistent Subclass Parameter Annotation]
   public @Nullable File downloadBundleResourceFromUrlSync(
       final String resourceURL, final File outputFile) {
     return mDevServerHelper.downloadBundleResourceFromUrlSync(resourceURL, outputFile);
@@ -888,6 +904,7 @@ public abstract class DevSupportManagerBase implements DevSupportManager {
           }
 
           @Override
+          // NULLSAFE_FIXME[Inconsistent Subclass Parameter Annotation]
           public void onFailure(final Exception cause) {
             hideDevLoadingView();
             if (mBundleDownloadListener != null) {
@@ -975,6 +992,7 @@ public abstract class DevSupportManagerBase implements DevSupportManager {
       // start shake gesture detector
       if (!mIsShakeDetectorStarted) {
         mShakeDetector.start(
+            // NULLSAFE_FIXME[Parameter Not Nullable]
             (SensorManager) mApplicationContext.getSystemService(Context.SENSOR_SERVICE));
         mIsShakeDetectorStarted = true;
       }
@@ -1060,6 +1078,7 @@ public abstract class DevSupportManagerBase implements DevSupportManager {
   }
 
   @Override
+  // NULLSAFE_FIXME[Inconsistent Subclass Parameter Annotation]
   public void setPackagerLocationCustomizer(
       DevSupportManager.PackagerLocationCustomizer packagerLocationCustomizer) {
     mPackagerLocationCustomizer = packagerLocationCustomizer;
@@ -1071,6 +1090,7 @@ public abstract class DevSupportManagerBase implements DevSupportManager {
   }
 
   @Override
+  // NULLSAFE_FIXME[Inconsistent Subclass Parameter Annotation]
   public @Nullable SurfaceDelegate createSurfaceDelegate(String moduleName) {
     if (mSurfaceDelegateFactory == null) {
       return null;