More Hi Guys, I am a video operator and video editor and this jump to conclusion makes me to post this At least, that was my experience when working with pre-UEFI motherboards in a lab environment. The widespread adoption of UEFI in modern motherboards means that usability has been substantially improved, and with that in mind, flashing no longer requires a bootable CD with command prompt loaded.
The most recent version of your board's BIOS, found from the manufacturer's site. Store this on the USB device. Do not disconnect power at any time during this process. Don't perform during electrical storms. When updating via internet, most boards will store the update locally, wipe the old firmware, and then apply the update.
In the event your board does not do this, but instead requires a constant internet connection, it is advisable not to disconnect your wire during the update.
We would also advise opting for a wired connection. Also note that flashing BIOS will wipe all settings, so it is recommended that you write down any overclocking settings before proceeding. This is a good thing. The reason that flashing firmware can brick a board is because there exist no consumer means to recover a corrupted firmware chip. To update firmware, the board must first wipe the existing blocks housing the firmware, then apply the update block-by-block to the flash device.
Failure or power loss during the 'wipe' phase will likely result in catastrophic failure -- or unrecoverable corruption to the Flash memory. Dual BIOS eliminates this concern. For most users, it is recommended that you don't fix something that isn't broken, to paraphrase an adage. Navigate to "Tool," then "EZ Flash.
Store this to a USB device. Review this and accept. Check the BIOS version again to ensure the update was applied. You will need to re-apply BIOS settings manually. Subscribe to the YouTube channel for more tutorials, as always.