Asus X99-M WS, Manual

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Chapter 2: Basic installation
Chapter 2
2.2 BIOS update utility
USB BIOS Flashback
USB BIOS Flashback allows you to easily update the BIOS without entering the existing
BIOS or operating system. Simply insert a USB storage device to the USB port (the USB port
hole marked in green on the I/O shield) then press the USB BIOS Flashback button for three
seconds to automatically update the BIOS.
To use USB BIOS Flashback:
1. Download the latest BIOS from the support site at http://support.asus.com and save it
to as USB storage device.
We recommend you to use a USB 2.0 storage device to save the latest BIOS version for
better compatibility and stability.
2. Insert the USB storage device to the USB Flashback port.
Refer to section 2.3.1 Rear I/O connection for the location of the USB port that supports
USB BIOS Flashback.
3. Shut down your computer.
4. Press the BIOS Flashback button for three seconds until the Flashback LED blinks
three times, indicating that the BIOS Flashback function is working.
• 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.
For more BIOS update utilities in BIOS setup, refer to the section 3.11 Updating BIOS in
Chapter 3.
USB BIOS Flashback port BIOS Flashback button
5. Wait until the light goes out, indicating that the BIOS updating process is completed.