I just tried to upgrade my good old pentium 133 / 64 mb firewall box
from 1.2 to 1.22 but all it does is rebooting before the kernel
initialization messages are shown on the console. The kernel seems to
load ok, but then the box reboots instantly. After manually writing the
1.22 img to the flash card with physwrite (did not help) I rolled back
to 1.2 and my box works fine again.