How To Update Your Mercedes Command NTG Map Data
This is how you update your Mercedes Map Data on NTG 5. I believe it is a similar process for 4.5 and 4.7. This is approximately $100 versus $200-$250 from a dealer. I used BimmerGuru but coders such as Amir can help out too. https://www.ebay.com/usr/bimmerguru