Just purchased a 2007 Audi A6 c6 Avant. ( My second Audi) It's got a 2g high mmi with dab. I've tried to reset the mmi as the dab isn't showing on the mmi. So not sure how to proceed at moment. I have purchased vscd vagcom so I can check system etc I have ordered the latest mmi update discs from Audi 5570 and latest maps for nav. I would like to add usb play capability using an Ami or something else and a reversing camera. I have read about adding a camera, but seem to get conflicting info on what I may need. The car does have reversing sensors.