Installed FreeBSD security updates on krava.arved.priv.at. On reboot the kernel hang.
kernel.old also hang. Downgrade to 13.2 also hang.
Tried disabling hardware components via device.hints.
First suspected the keyboard, as atkbd printed the last line, but finally found out, that uart needs to be disabled
See https://forums.freebsd.org/threads/boot-hangs-on-cherrytrail-uefi-system-installer-preinstalled-stick-no-dmesg-written.57321/