I had to install a new- to- me (used) head unit. It has a COMAND NTG5.1 system. I am took it to Mercedes dealership and paid $250 to clear the Auto theft system. the problem is, the Navigation system is wiped blank. I am trying to find an SD Card (North America edition), but have had no luck on Amazon and Ebay. Apparently, the NTG5.1 COMAND unit is not compatible with other systems.. I actually purchased an SD Card only to find out it was the wrong one, so I'm hoping to track down the right one before the purchase.
Thanks for the help.
Jim