How do I update the BIOS using a USB flash drive?

Enter the Advanced Mode of the BIOS setup program, go to the Tool menu, select ASUS EZ Flash Utility, and press <Enter>. Insert the USB flash drive containing the latest BIOS file, select 'via Storage Device(s)', navigate to find the BIOS file, and press <Enter> to perform the update. Do not shut down or reset the system while updating the BIOS to prevent boot failure, and ensure the USB flash drive is formatted as FAT 32/16 with a single partition. (Page 3-24)