Once the installation finishes, your phone will prompt you to . It will boot into recovery mode, perform a factory reset, and then restart into the OxygenOS 11 setup screen. Alternative: The MSM Download Tool
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. Downgrade Oneplus 9 To Android 11
provided by OnePlus specifically for downgrading from Android 12. Once the installation finishes, your phone will prompt
The OnePlus 9 series was launched with Android 11 out of the box, and later received updates to Android 12 and even Android 13. However, there may be reasons why you want to downgrade your OnePlus 9 to Android 11. Perhaps you're experiencing issues with the newer version, or you prefer the familiarity of Android 11. Whatever the reason, downgrading your device can be a bit tricky, but it's doable. In this article, we'll walk you through the process. If you follow this guide step-by-step, your OnePlus
This tool is for emergency use only. It wipes everything and restores the phone to exactly how it left the factory.
to (OxygenOS 11), you must use a specific Rollback Package . ⚠️ Critical Warnings