Downgrade Oneplus 9 To Android 11

Sometimes, "downgrade" is actually an upgrade. Just remember to back up your data first.

Skip through the initial setup, then use the OnePlus Switch app to restore your backup from the external drive. Downgrade Oneplus 9 To Android 11

: 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. Sometimes, "downgrade" is actually an upgrade