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About DD1977

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  1. Hi, i have a problem with my 840BT. I tried to update it and no it is not starting anymore. It only says "Falsche SD Karte " That is german for "Wrong SD Card" Can someone help me ? Thx Dietmar
  2. Killed my F840BT only testmode is working :(

    anyone here that can help out with AVIC-F840BT Problems ? I would need some help / i only shows wrong SD Card when starting the car