Upgrade android
This is my method to upgrade to major android version.
- Download the distro file, in my case it is the latest zip file in https://download.lineage.microg.org/alioth/
- Reboot in sideload mode
adb -d reboot sideload
- Upgrade to the new version
adb -d sideload <your file>
It will take some time and there will be a message on the phone to tell me that it is completed.
- reboot the phone and that’s it