Asus Crosshair V Formula/ThunderBolt - Manual (Page 128)

3-44 Chapter 3: BIOS setup
• This function can support devices such as a USB flash disk with FAT 32/16
format and single partition only.
• DO NOT shut down or reset the system while updating the BIOS to prevent
system boot failure!
Ensure to load the BIOS default settings to ensure system compatibility and
stability. Select the Load Optimized Defaults item under the Exit menu. See
section 3.9.Exit.Menu for details.