Thanks fro the great help.. I can see now the map in BaseMap but only when my Garmin Device is connected. I tried to pull it into Basemap Like a Waypoint , but when I disconnect the Garmin device there is only a standart Globalmap. OR can i solve this with IMGmod ???

@dasilvarsa Sry i dont understand: "When using IMGmod make sure you have lowercase .img uppercase .IMG gives an error." Just rename gmappsupp.img or gmapprom.img to lowercase.img ?????