@iz_zi I guess you downgraded your Fairphone 5 from 14 to 13 for installing UT. Sad you didn't get the info before but : You MUST let bootloader unlocked for being able to install AND run Ubuntu Touch on most devices (I think only volla devices sold preinstalled with UT have bootloader locked and can run like that). When you downgrade Android version on recent android devices like FP5, YOU MUST NOT relock bootloader, because of the "anti rollback protection" google imposed on recent devices specifications. There is a warning for that particular case ("downgrading", which can be on the same android version, because most important here is the security patch date) on the Fairphone website downgrade/manual install tutorial. Sadly your only way now is to contact FairPhone support.