Asrock Taichi x670-E Bios Won't let me update

I’m on the 1.11. AS03 beta and I’m getting system instability such as random reboots and crashes in video editing with most software not even wanting to launch. I put the 1.11. AS06 beta bios on a flash drive and the Flash utility isn’t even picking it up? I tried formatting the USB to eXFAT32 multiple times but it won’t pick it up. It was running fine a few days ago but today it kept just restarting every time I tried to run a game or edit a video. I’m at a loss on what to do next because the system is just to unstable. Any help would be greatly appreciated, thanks.