All this maps could be unlocked in MapSource up to version 6.15.7 using code generated with JetMouse keygen without any extra procedure, but if your MapSource is newer, you will have to install version 6.15.11 (6.16.1) and overwrite it with patched version. Looking up the unlock code 'Maps'/Manage map products/'Unlock regions' tab/'Europe NTU 2018.3' - doubleclick. And creating the gmapprom.unl file with the code in the 'Garmin' directory of the GPS unit - editing the 'GarminDevice.xml' file in the 'Garmin' directory, to include this code as the Unlock element. Which obviously did not help. Fixed an issue with rendering maps in a locked map product that contains terrain shading data. Changes made from version 3.10.2 to 3.10.3: Fixed an issue detecting some Garmin mass storage devices. Fixed an issue at application startup when the expected code pages are not installed on the PC. Changes made from version 3.10.1 to 3.10.2. How to Unlock locked Garmin maps already installed on computer.Releated post: http. Download your unlock file(s) Open Garmin MapManager; Click on File; Choose on Import Unlock Code. Choose an unlock file from your Downloads folder; Click on Install; If you downloaded more than one unlock code, repeat steps 3 through 6 above for each unlock file; Close and reopen Garmin BaseCamp; Your product is now unlocked.
Backroadmapbooks uses Garmin License technology to unlock and display the maps on your unit. The license files are used to unlock the maps on your device and can also be used to unlock the maps you have installed in Garmin Basecamp.
The .gma file is used to authenticate the maps on a GPSr when loaded from a microSD card.
Garmin Basecamp requires you import this file to authenticate the installed maps before they will display a fully detailed map.
The .unl file is the unlock key file and consists of your 25 digit key.
License files are located in the Garmin folder on the microSD card and are unique to each card.
Warning: Copying data from the original microSD card to another card will display an error message:“Cannot unlock maps.”
The “Cannot unlock maps” error is displayed when the license file does not match the card it was generated for.
For information only, How to Unlock Garmin maps.
First get your hands on the desired Garmin City Navigator Downloadable Update for your country/city (MapSource A).
In the compressed file should be the folders IMG, support and Windows plus a readme.txt.
You will need a version of Garmin MapSource 6.13.1 or older which does NOT support Unlocking via the internet (MapSource B).
This can be found in older version of the downloaded map update files (perhaps a 2007/2008 version).
Run the CN.msi installation file to install the old version of MapSource (B).
Run MapSource (B) and the UnlockWizard.
Now get your hands on Garmin Unlock Generator V1.5,
Enter your 10 digit Unit ID, and select map product <custom mapset>, enter the FID (MapID) of the newest Downloadable Update (the one you want to Unlock).
Click generate, copy the 25 digit map unlock code and paste this into the UnlockWizard.
At this stage you will have the older version of MapSource (B) with some old map.
Garmin Map Unlock Program
Run the CNMENT2010Update_ENU.msi file in IMG folder (MapSource A).
Garmin Unlock Codes
Run MapSource (A). That’s it. The map should now be Unlocked.