Downgrade Oneplus 9 To Android 11 Exclusive !!exclusive!!

OxygenOS 11 represents the final iteration of the clean, lightweight, near-stock Android design that originally made OnePlus famous.

Exclusive Tip: The latest functional build for Android 13 to Android 11 is . If you are on Android 13, you cannot directly downgrade to Android 11 without first going to Android 12. The path is: Android 13 → Android 12 (using downgrade zip) → Android 11.

Downgrading your device can have some risks and consequences, including:

The tool will detect the device as "Qualcomm HS-USB QDLoader 9008" and flash the factory Android 11 image. Oneplus 9 Pro | Downgrade to OXYGEN OS 11 downgrade oneplus 9 to android 11 exclusive

A warning screen will appear reminding you that this action completely wipes your storage. Confirm and tap .

To downgrade your Android 11 (OxygenOS 11) , you must use a rollback package. This process will wipe all your data , so ensure you have a full backup before proceeding. 1. Preparation Backup Your Data

Your OnePlus 9 is now successfully rolled back to Android 11. The device will now operate on the original OxygenOS 11 software architecture with stock performance metrics, original camera processing configurations, and the classic user interface design. OxygenOS 11 represents the final iteration of the

With the package in place and the installation utility ready, you can now trigger the downgrade.

Download and install the official utility tool. Open the newly installed Local Update app.

: A warning will appear stating that this will erase all data. Confirm the installation. : Once the installation reaches 100%, tap The path is: Android 13 → Android 12

OnePlus provides official rollback packages packaged as .zip files. You must download the specific firmware that matches your phone's regional variant. OnePlus 9 OxygenOS 11 Rollback Package Europe (EU): OnePlus 9 OxygenOS 11 Rollback Package North America (NA): OnePlus 9 OxygenOS 11 Rollback Package

Downgrading will wipe all data on your phone. This process is irreversible via OTA updates (you will need to manually upgrade again if you change your mind). Proceed at your own risk.

: Open the newly installed Local Update app, tap the gear icon, select your rollback package, and tap "Install Now". : Once finished, your phone will reboot into Android 11. Method 2: MSM Download Tool (Deep Rollback/Unbrick)

fastboot flash aop_a aop.img fastboot flash aop_b aop.img fastboot flash bluetooth_a bluetooth.img fastboot flash bluetooth_b bluetooth.img fastboot flash boot_a boot.img fastboot flash boot_b boot.img fastboot flash dtbo_a dtbo.img fastboot flash dtbo_b dtbo.img fastboot flash modem_a modem.img fastboot flash modem_b modem.img # Critical: Flash system as raw (not super) fastboot flash system_a system.img fastboot flash system_b system.img fastboot flash vbmeta_a vbmeta.img fastboot flash vbmeta_b vbmeta.img fastboot flash vendor_a vendor.img fastboot flash vendor_b vendor.img