These two bioses DO NOT WORK on the GA-AX370 Gaming K7 at all. It will flash, you will get one boot, then nothing. System will not bootup at all. Lucky for Dual Bios. Back to F25, works fine. Tried several times, noway F30 or F31 will work. Either fails to boot, or gets a Boot device error, even when forced to boot to the correct drive. Any bios F25 and below, no issue at all. All worked. Gigabyte fooled up somewhere with this bios release. BEFORE YOU RELEASE a BIOS, make sure its compatible with the board its being released for.