OMG I am confused now, do you want me to use the Utilities off the website or copy the F13 files onto a USB and do the instructions you gave me
Gigabyte has made this much more difficult than it needs to be, so your confusion is understandable.
Copy the files to a USB drive, plug it in first & enter the BIOS. Then F8 & see what it says. It won't flash anything automatically, should ask questions first.
Flashing from within Windows is generally more risky & involved (except for my HP laptop). However, the @BIOS utility seems straightforward. If you're more comfortable doing it from Windows, try that first.
Looks like step 4-III will do it, since you have the files downloaded & extracted:
Update BIOS NOT through Internet :
a. Do not click "Internet Update" icon
b. Click "Update New BIOS"
c. Please select "All Files" in dialog box while opening the old file.
d. Please search for BIOS unzip file, downloading from internet or any other methods (such as: 6OXM7E.F1).
e. Complete update process following the instruction.
The BIOS file is
990XAUD3.F13