Das hier klingt doch schon mal wie ein Ansatz und könnte klappen (aus dem Manual)
Updating BIOS with BIOSTAR BIO-Flasher
1. Go to the website to download the latest BIOS file for the motherboard.
2. Then, copy and save the BIOS file into a USB flash (pen) drive.(Only supported FAT/FAT32 format)
3. Insert the USB pen drive that contains the BIOS file to the USB port.
4. Power on or reset the computer and then press <F12> during the POST process.
5. After entering the POST screen, the BIO-FLASHER utility pops out. Choose to search for the BIOS file.
Edit: hat er doch beim kopieren echt die F12 verschluckt.