: Android 7.0 or higher is required for the latest updates. Troubleshooting OBB Issues

Windows/Mac changed the extension when you transferred the file via USB from a computer. Fix: On your PC, go to "View > File name extensions" and make sure it says .obb , not .obb.txt or .obb.zip .

: Go to Settings > Apps > Special app access > Install unknown apps and grant permission to your browser or file manager.