Remember: Avoid random file-hosting sites. If you follow this guide step-by-step, your OnePlus 9 will be back on Android 11 within 20 minutes.

To downgrade your OnePlus 9 Go to product viewer dialog for this item.

: Returning to the "classic" OnePlus UI before the merger with ColorOS.

Then, the OnePlus boot logo appeared. Not the new ColorOS one. The old, familiar, reassuring logo.

This is the most important section of this guide.

To downgrade your OnePlus 9 to Android 11, you'll need to:

Downgrade Oneplus 9 To Android 11 -

Remember: Avoid random file-hosting sites. If you follow this guide step-by-step, your OnePlus 9 will be back on Android 11 within 20 minutes.

To downgrade your OnePlus 9 Go to product viewer dialog for this item. Downgrade Oneplus 9 To Android 11

: Returning to the "classic" OnePlus UI before the merger with ColorOS. Remember: Avoid random file-hosting sites

Then, the OnePlus boot logo appeared. Not the new ColorOS one. The old, familiar, reassuring logo. you'll need to:

This is the most important section of this guide.

To downgrade your OnePlus 9 to Android 11, you'll need to: