Re: Flashing Bios
Wait...Do you have the mobo currently? Or are you upgrading soon...?
You can update Bios before or after OS installation. Flashing runs from DOS mode so it doesn't really need an OS, unless you're using an OS-based utility.
Also make sure 100% that there isn't any other way to flash the bios via windows utility. If there is a failure during update, there goes your mobo.
btw.. If there isn't anything wrong with your comp or mobo, don't even flash because if it "ain't broken, don't fix it". Not all Bios updates are mandatory.