Quote Originally Posted by Frustated XT user View Post
In otherwords, you have to use Bluechart 2008.5 in version Mapsource 6.13?
I have not tried it but my favorite on unlocking new NT map is by using "MapReverseConverterENU", which convert all new map format to the old 6.13.7 mapsource, then use the trusty old All.bat and garminunlocker.exe to unlock it without using the new jetmouse key with unit ID. I just delete the installed NT map at C:\ProgramData\GARMIN\Maps\xxx (as it is still considered unlocked by mapsource 6.15.x