Tried awdflash bios.rom, also tried awdflash <enter> and typed in bios.rom. I got the same message both times. Reading the instructions it looks like awdflash needs a bin file but I do not know if I read it correctly.
I already done same bios before: try ISA method, awardflash 8.94 Code: awdflash 509SLIC.ROM /cc/cd/cp/py/R