Audi TT MIB Harman without nav

[a4b9]

Is it possible to add navi functions on Audi TT 8S model (USA car)??
Fec codes added, settings:
Navigation_System - activated
gps_antenna_1 - activated
But NavDB from map instalaltion is [N/A]. Nav button not works.
Another problem that I can not edit (unit not saves) variant by e2p command, then on modified eeprom to eu and after fw update unit has diagnostic off by obd. 5F diagnostic works only when restore original US eeprom.

[Phaeton]

Yes, it's possible.

[Tschako]

Yes, its no problem! Send a PN for the direct way to our support structure in EU...