ASROCK Fatal1ty X399 - Page 34

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ASRock BIOS Flashback feature allows you to update BIOS without powering on the system, even
without CPU.
To use the USB BIOS Flashback function, Please follow the steps below.
1. Download the latest BIOS le from ASRock's website : http://www.asrock.com.
2. Copy the BIOS le to your USB ash drive. Please make sure the le system of
your USB ash drive must be FAT32.
3. Extract BIOS le from the zip le.
4. Rename the le to “creative.rom”.
5. Plug the 24 pin power connector to the motherboard. en turn on the power supply's AC
switch.
*ere is no need to power on the system.
6. en plug your USB drive to the USB BIOS Flashback port.
7. Press the BIOS Flashback Switch for about three seconds. en the LED starts to blink.
8. Wait until the LED stops blinking, indicating that BIOS ashing has been completed.
*If the LED light turns solid green, this means that the BIOS Flashback is not
operating properly. Please make sure that you plug the USB drive to the USB BIOS Flashback
port.
BIOS Flashback Switch
(BIOS_FB1)
(see p.3, No. 19)
BIOS Flashback Switch allows users
to ash the BIOS.
USB BIOS Flashback port