“ Originally Posted by Will7272 
”
Connect your device using activesync.
Run Mapsource.
Click on Utilities---->Get Unit ID
Once you get your Unit ID, place it in the top line of the Keygen.
Get your GM XT Device Unlock Code and copy to cliwckedoard.
Go to Utilities and paste that 25 digit code into Mapsource.
On same keygen screen, look for Select Map Product.
Scroll down and select custom map set. A small window will open asking you to input the Map ID code.
Enter 243 in this field.
Get the map unlock code and enter that 25 digit code into Mapsource the same way you did your GM XT Device Unlock Code
This will unlock the detailed maps for the US and I believe Canada. Scroll or pan around to where you want to have detailed maps. Once you select or highlight an area, hit the send to device button and you're good to go. If you have any questions or problems, I'll do what I can to help. I have tested and use this on my Mogul and it works flawlessly.
I am never prompted for a Map ID code, so I can not enter 243 in this field. After getting my GM XT unlock code, etc., I select the map product City Navigator North America NT 2008, but no window opens. I only have the option to generate a key. FWIW, I am using keygen v1.3.
Update: I was choosing the complete North America map product and didn't select custom. Will try again. Thanks.
2nd Update: Not mentioned was whether to register the product -- in all cases, I opted not to. Anyway, I selected the lower portion of Canada and all of the continental U.S., clicked on the send to device button, and received an error, asking that I copy the log and send it to Garmin (which I didn't). The log is attached.