Let me share the screen that our Supermicro server showed to reward us for a day of work...
http://www.supermicro.nl/products/sy...cfm?parts=SHOW

Then, we also discovered that Supermicro wants money to obtain a license to flash bios remotely using the IPMI.
(anyway, we are not sure this could work to recovery the bios)

Supermicro: really, thanks.