Do you need a USB to update BIOS?
You don’t need a USB or flash drive to update BIOS. Simply download and extract the file and run it. It will reboot your PC and will update your BIOS outside from the OS.
What format should USB be for BIOS update?
Download and save the BIOS update (. BIO) file to a portable USB device (or to a microSD card). Example: Note: The USB device must be formatted as FAT32 in order to update an Intel® Compute Stick STCK1A32WFC or STCK1A8LFC.