Downgrade Oneplus 9 To Android 11 Exclusive [top] Now

Use this if the local update fails or if your phone is bricked. This method uses the device's low-level EDL (Emergency Download) mode. How to Downgrade OnePlus OxygenOS via MSM Download Tool

If the local upgrade fails, or if you want to ensure a 100% clean slate, the MSM Tool is the industry standard. This is a low-level flashing tool used by OnePlus service centers. downgrade oneplus 9 to android 11 exclusive