The method to access the Local Upgrade menu varies depending on whether your OnePlus 9 is currently running Android 12 or Android 13. If Your Phone is on Android 12: Open > About Device > Software Update . Tap the Gear Icon in the top right corner. Select Local Upgrade . Tap on the Android 11 rollback zip file you moved earlier. Tap Install Now and confirm the data wipe. If Your Phone is on Android 13:
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The exact steps to trigger the local installation vary slightly depending on your current operating system version. If you are on Android 12: Open and go to About device . Tap on Version at the top. Downgrade Oneplus 9 To Android 11
A successful and safe downgrade requires careful preparation. Skipping these steps can lead to data loss or a failed process.
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. The method to access the Local Upgrade menu
Downgrading will wipe all data on your phone. Please read the prerequisites carefully before proceeding.
Before we discuss the how , let’s discuss the why . Understanding this helps validate your decision. Select Local Upgrade
What is your (e.g., LE2111, LE2113, LE2115)? Which Android version are you currently running?
The downgrade process involves unlocking your device's bootloader, flashing the Android 11 firmware, and then locking the bootloader again. Please follow these steps carefully: