Download and extract BIOS CAP files from the
official ASUS website at www.asus.com
*Check the below table to confirm your current BIOS version is either .ROM or .CAP. If your BIOS version is .ROM, to update it to the latest .CAP version, go to BIOS Utilities in the download section of the official ASUS product site and use the BIOS Converter for .CAP support first. Detailed installation guides provided.
*If your BIOS version is 1404 or older: Go to BIOS-Utilities to download and install the BIOS Converter utility before updating the BIOS.
|Model lists||P9X79 DELUXE
|Rampage IV Extreme
Rampage IV Formula
Rampage IV GENE
|.ROM BIOS support||BIOS version 1203 or previous version||BIOS version 1404 or previous version||BIOS version 1305 or previous version|
|.CAP BIOS support||BIOS version 2002 or later version||BIOS version 2003 or later version||BIOS version 3003 or later version|
Rename the file as below table, and then save it to the USB storage device’s root directory.
If you are still using .ROM BIOS versions, check the ASUS website for the .ROM to .CAP BIOS Converter, which comes with a detailed user guide.
Plug the USB storage device to the white-colored USB2.0 port, then press the USB BIOS Flashback button/ROG Connect button for three seconds till the LED begins to blink, then release.
Connect to a power supply
Wait till the LED stops blinking, indicating that BIOS flashing has been completed
Check this video guide