Ozzy, go to the BDP-83 page on the Oppo website, and select the Support tab. You will see the downloadable firmware versions and instructions:
http://www.oppodigital.com/blu-ray-bdp-83/blu-ray-BDP-83-Support.aspx
http://www.oppodigital.com/blu-ray-bdp-83/blu-ray-BDP-83-Support.aspx