If after you verify the version you have (you may already have the current BIOS running) installed with CPU-Z (http://www.cpuid.com/downloads/cpu-z/1.54-setup-en.exe).....go
to the Gigabyte website at the following link: http://www.gigabyte.com.tw/products/product-page.aspx?pid=2669#dl
Download the most current version from the location closest to you. Don't use the beta version in your situation (newbie).
Save the file and run from your PC. Should do the trick.
CPU-Z will run a small program to identify your system, including the BIOS version installed. If you need the current version, just download and install. Links above will get you there. Good luck!