How do I update the BIOS using a USB flash drive on the ROG Strix B450-F Gaming?

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. After the update is done, reboot the system, and ensure you load the BIOS default settings by pressing <F5> for system compatibility and stability. Note that the USB flash drive must be in FAT 32/16 format with a single partition only. (Page 3-24)