Paul van der Vlis paul@vandervlis.nl Thu 2014-09-11 16:41:
When I ask Supermicro support (Europe) for another solution to upgrade the bios, they only can advice me to create a bootable USB stick with MS-DOS using a Windows PC.
I've done (PC) BIOS updates using FreeDos. That works fine. I believe I had to disable some CDROM or hard disk drivers in config.sys/autoexec.bat so the system wouldn't accidentally disable the floppy emulation when running from a USB stick.
If that works for you, that's maybe a usable recommendation for the Supermicro 1st level support answering catalogue.