OnePlus 11R / ACE 2 | community

Backup is the first step Along with that download your downgrade file parallelly You've to enable developer option ( go to about phone then to version and tap 7 times on version number it'll unlock developer options), then go to software update section, tap on three dots on top right corner, click on local install and select that downgrade file That's it it'll downgrade you to OOS 14 14.0.0.806 you can then update to latest OOS 14 14.0.0.810 or you can further downgrade to OOS 13 13.1.0.581 upto you https://storage.wanyol.com/oplus-test/10731_sign_CPH2487_11_C_OTA_1550_all_svVzgL_00011011.zip This is OOS 14 downgrade file