I have recently brought a a3 63 plate and I want to get the sat nav working on the Mmi screen, it came with the sd card but I have got to get it registered or something so I rang Audi and asked how much it would be to register it and they said around £75 but it is not garunteed it will work and it's £550 for a brand new one so I was wondering is it worth risking the £75 to try and get it working or should I just fork out the £550 (which I don't want to do)
