Enter a 25 character unlock code into MapSource to unlock my BlueChart, City Navigator or Topo maps

If a map has been previously unlocked, a 25 character unlock code has been generated and can be entered into the  MapSource™ software to unlock the map on the computer. 

Before unlocking the map, ensure that the latest version of the MapSource software is installed.

To unlock maps in the MapSource program:

1. Open MapSource
2. Click the Utilities menu
3. Click Manage Map Products
4. Click the Unlock Regions tab
5. Click Add
6. Type in the 25 character unlock code into the first box
7. Click OK
8. Close the Manage Map Products box
9. Close the MapSource program
10. Reopen MapSource

The maps will now be unlocked on the computer.  If the maps are displayed as "unauthenticated," refer to the Related Content.