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Revert to Previous BIOS Maximus VIII Hero Alpha

Level 7
I have been experiencing a lot of "freezing" since my BIOS updated to 2202 on my ROG Maximus VIII Hero Alpha. Is there a way to revert back to 1902? Every time I try to do it from the EXFlash utility, it gives me an error message that the file I downloaded from the ASUS website is "not a proper BIOS". Am I missing something or is there a trick to replacing the new BIOS update with an older one?
ROG Asus Maximus Hero VIII Alpha
Ripjaws DDM4-3400
Intel i7-6700K Unlocked
Strix Gaming Radeon R9 390

Level 40
I don't think EZ flash works for previous BIOS...use USB Bios Flashback method...check your manual...

Level 7
You do need to use USB Flashback. Make sure you rename the desired bios file " M8HA.CAP " and save that file to a USB formatted to FAT32. Just power off the system, stick that USB in the USB Flashback port, press and hold the USB Flashback button until it starts blinkin. Page 2-13 of the manual.