hey guys new user here, greetings from the UK

would an update back to 0000 reset the service menu as well.
Yep i screwed up, went in there made some changes when i had no idea what I was doing and now my HDMI inputs are messed. up. I plug HDMI into any input, flicks and then i get no signal. Iv managed to get a signal for 2 secs before it resets.
hoping someone can advise.
thanks