Its an ECS AMD690VM-FMH motherboard, since this is

Its an ECS AMD690VM-FMH motherboard, since this is an OEM product for the manufacturer FSC(Fujitsu-Siemens) you will not find an bios on ECS website. Its a bit tricky to get a working direct link from the FSC website, so you should do the following procedure to get to the right place.
open support.fujitsu-siemens.com/com/support/downloads.html
input serial: YSHS001234 (than, selected modell should be "SCALEO PA 2662")


click on go, on next step select flash-bios, thats all:D
u will see bios version 5.01(its the last with RAID enabled) and 5.13(is the most current one)

Pls, if you are able to change the bios in the right way, can you give me some information about how to do this? Than I can do the next biosupdate by myself.
Thanks in advance

EDIT: I just tried to replace the Fullscreen Logo with cbrom.

cbrom /Logo release
cbrom /Logo newLogo.bmp

After flashing, same result, nothing. No screen, no beep. Only Fan and LED are still working. Is it possible that the Bios from these OEM motherboard is anyhow protected against changing everything?