I installed #Android12 on my #GooglePixel 3a yesterday and experienced some problems:
1) After installing the update, the lock screen crashes immediately after loading. So, as soon as I enter the SIM-PIN, the phone tries to reload the lock screen every few seconds
(1/n) 2) After some time of a flashing status and notifications bar, the phone reboots
3) After booting, step 1 and 2 repeat
4) The phone asks me to perform a hard reset (System couldn't be loaded)
(2/n)