hi guys has anyone had problems with sat nav not showing on main menu after trying to up grade i bought a disc from ebay and didnt read the info properly it turns out it was for the mk4 unit dvd snd mine seems to be mk3 cd rom when i went to load it up it stated to do what the instructions said but what was supposed to take minutes still had not worked after waitng 30 mins eventualy got the disc to eject but the screen was blank and sat nav not listed on it put the original disc back in but still no go tried disconnecting battery today but that still aint worked anyone got any ideas
