I`m sure the 4MB bios you posted is wrong,its from a foxconn H61MXV. The asus bios is 8MB. https://www.asus.com/Mini-PCs/ROG_GR6/HelpDesk_BIOS/ .Extract the bios download,remove the 2KB CAP header with a hex editor or use UEFITool,extract body.I posted the fulll asus bios already,there are 2 supported bios chips in the VSCC table .Flash the bios onto a winbond W25Q64FWSIG
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