Upgrade 9.1 -> 9.2 Invalid format / BTX halted

[Thomas Krause]

Hi,
I tried to upgrade one of my servers from FreeBSD 9.1 to 9.2
with
freebsd-update upgrade -r 9.2-RELEASE
after the first reboot the system hangs on boot with
Invalid format
...
BTX halted
It's a Supermicro X9SCL-F mainboard. I upgraded FreeBSD
from 9.0 to 9.1 REL sucessfull, when 9.1 was released.
What happend with the upgrade to 9.2?

Here is the screenshot http://212.78.99.130/btx.jpg

Thanks for any help.

Regards,
Thomas.