[PopDog]

Part was from other car with ext. amplifer so it had the old coding from the other car. Audi Dealer had the task to remove component protection, not to recode the Unit, so they did not touch. Invalid Dataset can exist with a wrong coding or/and of wrong parameters applied.

you can ignore it, if it works or you can repair. 

For repair: you need Audi workshop with online or someone with online access. (Re)apply newest mmi update. The Radio/Amplifer can have an older/newer version and online SVM can make a problem, if version differs from the old documented part. When applied newest update there is a SVM Code to make online documentation of the update. There it normally applies the right dataset and the right coding. After that i still would go to the ecu 56 and will start in guided function the check ecu configuration (online) which recheck/apply coding and dataset.

If EU Car apply: 8R0 906 961 FC : HN+_EU_AU3G_K0942 (SVM-Code: 3GPEU942AU3G)

Problem: Audi workshop will mostly not do anything, what you tell them in the front office. You have to talk to an experienced workshop mechanic and hope they will not charge you much.

For Navigation Problem: is it showing wrong place and driving through forests while on the motorway? GPS roof antenna is mostly broken because of micro crack and rainwater going inside. Sometimes wirement breaks. Cheapest Solution without changing roof antenna. Go to AMZ and search after gps fakra antenna (blue fakra end or turquoise end) and plug it in mmi unit. you can place the gps antenna somewhere behind mmi unit when car has no heat shielded front window.