I posséde an AUDI A6 with the MMI 3G.
My telephone is a HTC HD2 ROM French 3.14.306.2 - radio ROM 188.8.131.52
The Synchronization and with the MMI AUDI 3G of the car works perfectly but the connection falls aprés 30 minutes at the 1 hour.
Know a solution to the problem.
Thank you in advance.