Android 13 removes the native "Local Upgrade" option from the system update menu. To bypass this, you must use an official OnePlus APK tool.
Even with careful planning, you may encounter problems. Here are some common issues and potential solutions:
Tips on how to once you're back on Android 11. The best backup tools to use before you wipe the device. Downgrade Oneplus 9 To Android 11
This is the safest and recommended way to downgrade your OnePlus 9 to Android 11 without using a PC.
Android 13 hides the local install option by default. You will need a utility tool to run the update. Android 13 removes the native "Local Upgrade" option
Use if downgrade fails or device is soft-bricked.
All data, including photos, contacts, and messages, will be permanently deleted. Here are some common issues and potential solutions:
You will see a progress bar. The screen may flicker – this is normal.
Log into your Google account and restore your backed-up files and settings. Step 6: Stop Automatic Re-updates
Download the official OnePlus 9 Android 11 Rollback Package for your region. If the file ends in .jar , rename it to end in .