Garmin Image Unlock Gimgunlock
Niki Wienberg
I used a program called gimgunlock.v0.03 which I found with a google search.. ... I backed up the card and used gimgunlock to unlock the 2016.20 maps I have from my Garmin GPS with lifetime ... Found an image file, thanks.
Step 2: The gmapprom.img and gmap3d.img files should be manually unlocked before they go into the car using gimgunlock.exe. (See links at bottom for garmin image tools) To unlock the two files, simply drag-and-drop them one at a time onto the "gimgunlock.exe" file using your file explorer. It will only take a couple of seconds to unlock both files. A command window will flash by, so fast you may miss it if you blink.
Step 3: Downgrade radio navigation to CTP13! This is very important as newer versions have secuirty that prevents loading of maps without dealer codes. Take a second USB drive with the gupdate.gcd from CTP13. The one I found was not for a dodge journey, however it still worked. Turn on the car and hold temp up + temp down + front defrost, after a few seconds dealer mode will pop up. Select garmin recovery update and plug in the usb drive with CTP13 on it. NOTE: After you flash this it takes a long time to load. Let it load and it will still say cannot unlock maps. Just click ok, you may need to restart your car one time to click out of the pop up.
* Direct Modification - unlike other tools which use GMapTool to split an image file, unlock each tile, then join all tiles; this tool unlocks all tiles in an image file directly without splitting and joining. Therefore, you should back up your original map first before running this tool.* Super fast speed - The 1st result of direct modification is super fast unlocking. For example, a 2.3 GB image file can be unlocked in less than 4 seconds.* Zero disk space - The 2nd result of direct modification is that no intermediate disk space is required. In fact, you can unlock a big image file on a SD card or USB connected GPS device directly and quickly.* Intact header - The 3rd result of direct modification is that the original header of the image file is preserverd. Thus, timestamps, version number, Mapset name, etc. remain the same.* Less memory used - this tools runs happily on Win32 without the need of 3GB switch.* Multi-platforms support - this tool is distributed with Windows binaries. But those who prefer to run on Mac or Linux platform can compile the source code by themselves.* Ease of use -
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