Not all graphics cards provide the option to be flashed with any firmware, except only NVIDIA and AMD. In this post, we will discuss how to flash any BIOS to NVIDIA ...
To "flash the BIOS" means to install an update to the BIOS firmware. You are replacing the older BIOS version with a newer version. Unless you are experiencing bugs ...
Have you recently tried to update the BIOS? This thread would seem to contain the procedure needed to flash the backup BIOS to the main BIOS. I couldn't find any mention of it in the motherboard ...