In case anyone has not noticed, there are official builds for the OnePlus 9 Pro:
LineageOS is a free, community built, aftermarket firmware distribution of Android 11, which is designed to increase performance and reliability over stock Android for your device. LineageOS is based on the Android Open Source Project with extra...
This thread is for unofficial LineageOS builds for the OnePlus 9.
- https://wiki.lineageos.org/devices/lemonadep (just switch out "lemonadep" with "lemonade")
- https://www.androidfilehost.com/?w=files&flid=326502 (all unofficial builds)