Exclusive Tip: The latest functional build for Android 13 to Android 11 is . If you are on Android 13, you cannot directly downgrade to Android 11 without first going to Android 12. The path is: Android 13 → Android 12 (using downgrade zip) → Android 11.
Once the progress bar reaches 100%, tap Restart . The device will boot into recovery, perform a factory reset, and then start up in Android 11. Summary of Regional Rollback Links downgrade oneplus 9 to android 11 exclusive
OxygenOS 12 and newer removed the built-in local upgrade option. Here is how to restore it: Exclusive Tip: The latest functional build for Android
To downgrade your to Android 11 (OxygenOS 11), you can follow two primary methods. Both methods will completely wipe all data perform a factory reset