I could update a Fujitsu Esprimo E5625 (mainboard D2724-A1x) to a Esprimo E5635 (mainboard D2904-A1x) to support AMD AM2/AM3 C3 revision processors. I have used the official E5635 bios from the fujitsu website which normally would say when trying to update that the bios does not match the system due to it is a E5625. The only difference of the E5635 is a chassis lock on the mainboard. It now works perfect.