Random Screen dimming (while brightness slider stays at 100%) after A12 update

[yvmuell]

Just have a look here… In short: yes in general, be careful, main factor seem to be the security patch date…

Trapped in fastboot mode with locked bootloader and corrupted custom ROM

You’ll have to contactsupport, they’ll get you shipping labels to send it to the Cordon, the repair contractor. Will cost you 30€. Once you get your phone back, don’t ever lock the bootloader without checking fastboot flashing get_unlock_ability beforehand. And in the case of CalyxOS, don’t lock it manually the next time, the device-flasher checks for that and prevents you from bricking.