For the test, I will perform a BIOS update on the Asus M5A78L-M LX3 motherboard.
1) Download the new BIOS file from the official site https://www.asus.com/us/Motherboards/M5A78LM_LX3/HelpDesk_Download/.
2) Restart the computer and when the logo appears, press both Alt+F2 keys simultaneously to enter the utility for the firmware update.
3) In the utility, open the directory with the downloaded file and select it by pressing “Enter”.
We will wait for the file check, compare the current BIOS version in the “Current ROM” and the version of the file in the “Update ROM”, if the file is newer, then we agree to update the BIOS by pressing “Yes”.
During the upgrade, you can not turn off the computer, otherwise the firmware may be damaged and the computer will not start.
Watch the video as I updated the BIOS: