Asus motherboard BIOS update error: CAP file not recognised EFI bios!

  If you see the above error – and you’re selecting what you’re sure is the proper CAP file – chances are you’re trying to use a USB disk formatted to NTFS rather than FAT32. Frustratingly, the error message for a corrupt/non-CAP file is the same as the error message you get when you’re trying to use an NTFS-formatted drive, which Asus Ez Flash 2 is not compatible with.   The solution is simply to use a FAT32-formatted drive. If that doesn’t work double check that your file hasn’t corrupted during the download and is complete, and the right BIOS for the board.