Before beginning, ensure you meet these requirements to avoid bricking your device:
: To stay on Android 11, you must disable Auto-update in the system settings; otherwise, the phone will immediately prompt you to update back to Android 12 or 13. Downgrade Oneplus 9 To Android 11
It retains the distinct OxygenOS identity before the heavy integration with OPPO's ColorOS. Reliable Features: Fixed bugs related to Android Auto Before beginning, ensure you meet these requirements to