I'm a bit confused as to what exactly is upgraded.
I've got the Business Nav, and currently need to have the map DVD in for it to work.
What info is updated via the USB? Do I keep on using the same Nav DVD that I've got in the car?
BMW 135i AW Convertible . Steptronic . Business sat nav . Procede v5 . DCI . Custom quad pipe . Hartge rear diffusor . GPThunder angels . iCarbon mirrors
Mitsubishi CT9A Evolution GTA . TD06-20G turbo . Ti exhaust . ARC Airbox . Race Headers . ATP dump . Hybrid BOV . 100cel cat . Blitz SBC EBC . Leather Recaros . RL Coilovers . W/line Swaybar . Carbing Bracing . Hertz splits . JL W7 . 18" DTM rims + semi's