Downgrade Oneplus 9 To Android 11 Exclusive [work] Official

Some users report a 10-15% improvement in battery life on Android 11 compared to newer versions. It also avoids some of the aggressive app throttling discovered in later "optimizations".

OnePlus introduced ARB in Android 11 updates. The aboot and xbl partitions contain a rollback index. Attempting to flash an older index without modification triggers: downgrade oneplus 9 to android 11 exclusive

If you've successfully downgraded to Android 11, here are some tips and tricks to enhance your experience: Some users report a 10-15% improvement in battery