Do the Sony TVs (NSX-XXGT) have a UART port as well? Will this procedure work the TVs as well as the Blue Ray players?

I cannot really help with your questions. It would probably be best to ask at their IRC chat http://webchat.freenode.net/?randomnick ... ker&uio=d4 as listed on the gtvhacker wiki. If you get an answer can you post the answer for the rest of us. Maybe post a youtube?