Are you sure that the blind flash isn't working? I'm not sure how the bios file has to be formatted, but when I used the blind flash on my M5G, the bios file had to be formatted as "M5G.cap" So if I am following the proper format, you may need to name the bios file as "M6H.cap" to get a proper flash. If there is any bios corruption, a blind flash should fix the issue. When you press the button to start the blind flash, there should be lights which blink to show the start. If this doesn't help, try asking shammy over at KPC forums (kingpincooling.com/forums).