Tap on the Android 11 rollback .zip file you placed in the root directory.
(rename APK):
For many OnePlus 9 owners, returning to Android 11 brings back a snappier, more reliable experience. The phone’s original software was refined over months, and for some users, it simply works better than the newer Android 12 or 13 builds. downgrade oneplus 9 to android 11 exclusive
No, for the official rollback methods described above, you do NOT need to unlock your bootloader. These are signed OnePlus packages that install without bootloader modifications.
is a popular choice for users who prefer the original OnePlus software identity before the "ColorOS-ification" merge. 🌟 Review: Why Downgrade? Tap on the Android 11 rollback
Navigate to your folder to locate the firmware package.
Downgrading your OnePlus 9 to Android 11 may: No, for the official rollback methods described above,
Navigate to Settings > Google > Backup and trigger a manual backup for contacts, calendar events, and app data.
Before starting, ensure you have taken the following precautions:
If your OnePlus 9 is already bricked, stuck in a boot loop, or simply refuses to accept the OTA rollback package, the is your ultimate solution. This is the official tool used by OnePlus service centres to flash factory firmware. It works by putting your phone into Qualcomm Emergency Download (EDL) Mode (also known as 9008 mode) and reinstalling the complete Android 11 firmware directly to the device’s memory.
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