Asus ROG MAXIMUS Z790 HERO LGA 1700 ATX Motherboard - Manual (Page 70)

2-28 Chapter 2: Basic Installation
Chapter 2
BIOS FlashBack™ button BIOS FlashBack™ port
2.2 BIOS update utility
BIOS FlashBack ™
BIOS FlashBack™ allows you to easily update the BIOS without entering the existing BIOS
or operating system.
To use BIOS FlashBack™:
1. Visit https://www.asus.com/support/ and download the latest BIOS version for this
motherboard.
2. Manually rename the file as MZ790H.CAP , or launch the BIOSRenamer.exe
application to automatically rename the file, then copy it to your USB storage device.
The BIOSRenamer.exe application is zipped together with your BIOS file when you
download a BIOS file for a BIOS FlashBack™ compatible motherboard.
3. Plug the 24-pin power connector to the motherboard and turn on the power supply
(no need to power on the system). Insert the USB storage device to the BIOS
FlashBack™ port.
4. Press the BIOS FlashBack™ button for three (3) seconds until the BIOS FlashBack™
LED blinks three times, indicating that the BIOS FlashBack™ function is enabled.
5. Wait until the light goes out, indicating that the BIOS updating process is completed.
For more BIOS update utilities in BIOS setup, refer to the section Updating BIOS in
Chapter 3.
• Do not unplug portable disk, power system, or press the CLR_CMOS button while
BIOS update is ongoing, otherwise update will be interrupted. In case of interruption,
please follow the steps again.
• If the light flashes for five seconds and turns into a solid light, this means that the
BIOS FlashBack™ is not operating properly. This may be caused by improper
installation of the USB storage device and filename/file format error. If this scenario
happens, please restart the system to turn off the light.
• Updating BIOS may have risks. If the BIOS program is damaged during the process
and results to the system’s failure to boot up, please contact your local ASUS Service
Center.