SatNav with TV - moving workaround with firmware?

[FloydUK]

Hi all,

I have been doing a lot of learning about various aspects of the BMW on board SatNav workings this afternoon - anyhow, after a few hours of familiarising myself, I have managed to determine that my MK.IV can be upgraded to v28, I can get my hands on a 2006-2 disc with speed camera's and that if I want to I can pay a man in Nottingham (http://www.dashtechservices.co.uk/TV.htm) £80 to flash a firmware somewhere in my car to allow me to enable TV whilst the car is in motion. My question is, does anyone know what he is changing to enable TV? I have read lots of posts proclaiming that there needs to be a hardware change, but surely as this guys can do it simply by 'plugging in', someone on here might have a clue and would want to share the wealth without crossing anybody's palm with silvers?

Oh, and I do not intend to watch the television whilst on the go, but perhaps some of my passengers would.

Cheers & and sorry if this is a bit off topic, but I figured that this certainly seems to be the right place for firmware upgrades and the likes.

Floyd