Oneplus 9 To Android 11 Exclusive =link=: Downgrade

Once you've reached the Android 11 setup screen, you can check for minor OTA updates in to get the latest stable version of OxygenOS 11.

⚠️ This downgrade process will trigger a complete factory reset, erasing all internal storage, pictures, applications, and settings . Ensure you back up everything before executing the steps below. Before starting, fulfill these strict device requirements:

Official rollback packages for OnePlus 9 are available for Global (AA), European (BA), and Indian (DA) variants.

fastboot reboot fastboot

Rollback Oneplus 6 & 6T from Oxygen OS 11.1.1.1 to Oxygen OS 10 Stable

Shortly after the OxygenOS 12 update, the OnePlus community forums, Reddit, and Twitter exploded with complaints. Users reported the update was “extremely buggy” and lacked many customization options present in OxygenOS 11. Gadgets360 noted that the update “reportedly removed customisation options” and that early adopters “say that they can't customise icons, status bar, battery icons, or turn the Google Feed off”.

# Enable OEM unlocking in Developer Options adb reboot bootloader fastboot oem unlock # Accept on device screen downgrade oneplus 9 to android 11 exclusive

: Ensure your OnePlus 9 has at least 60% battery life to prevent shutdowns mid-process.

Before proceeding, understand these critical risks:

Once installed, open the app and look for the in the top-right corner. 3. Initiate the Rollback Once you've reached the Android 11 setup screen,

Official links sometimes become unavailable. In that case, community‑hosted mirrors are your best bet, but always verify the file’s MD5 hash if possible.

Try editing the payload_properties.txt file inside the update ZIP and change oplus_update_engine_verify_disable to 1 . However, note that “this could still result into bricking your phone because of this unintended update path”.

This is the recommended starting point for most users. It's an official process that uses a signed ZIP file from OnePlus, which is a rollback package designed to take your phone from Android 12 or 13 back to Android 11. Even though it's official, this process will completely wipe your data. community‑hosted mirrors are your best bet