hi guys, first posing on slk forum, i have read previously on here regarding retrofitting of new comand ntg 2.5, and am looking for urgent info to do with getting dealer to enable sound as the unit i have installed is logic 7 enabled. The dealer couldnt get star machine to talk to comand. By putting into star that its an r171 helps star talk to it. Dealer has called bak to say unless theres a secret menu that i can tell him about hes unable to change settings! Any help would be really appreciated thanks.