Hi, Just to follow up, i've upgraded (freebsd-update) one of my apu2c4 today - firmware upgrade to v4.8.0.7 (so switched from legacy to mainline) - FreeBSD upgrade from 11.2 to 12.0 smooth sailing so far. Ill try updating an apu1 ( running 11.2 ) with its current (mainline) firmware to 12.0 one of these days as well. Regards, Ruben