Downgrade Oneplus 9 To Android 11 [work] <POPULAR 2026>

Move the file to the of your phone's internal storage (outside all folders). 2. Install the "Local Update" Tool

If you're missing the stability or features of earlier OxygenOS versions, you can downgrade your Go to product viewer dialog for this item.

OnePlus removed the local install option in newer updates. You must download and install the to restore this feature. Download the APK from the OnePlus Community forums. Downgrade Oneplus 9 To Android 11

All data, including photos, contacts, and messages, will be permanently deleted.

Ensure your phone is charged to at least 30% (60% is recommended) to prevent power loss during the flash. Move the file to the of your phone's

Download the official OnePlus 9 Android 11 Rollback Package for your region. If the file ends in .jar , rename it to end in .

This is the standard method for users currently on a stable version of OxygenOS 12 or 13. OnePlus removed the local install option in newer updates

Before beginning, ensure you meet these requirements to avoid bricking your device:

Download the specific rollback package for your region (IN, NA, or Europe).