The thing is I updated via OTA and the process went smoothly (no errors during update in logs), it's just the device didn't boot up afterwards. Then I wiped the phone in recovery, did a format, downloaded the latest build on PC, transferred it to the phone and installed from scratch from recovery. The phone didn't boot up. There where no errors in the logs during installation.
I can open the archive and view/extract all files, so it's definitely not corrupted.
Then I downloaded the previous build from November 19, installed it from scratch and it did boot up, just as I expected.
I'm not sure what's going on but I guess I'll just wait till the next update.