753951 wrote:I was in the same boat as you. Nothing I tried worked. Until I got myself 3590LMT. Legit files from it, plus embedding unlock code into IMG file with gmaptool, did it for me. All downloads did not help. That was with North America maps.
Your best bet is to find LOCKED img file, unlock it yourself with gimunlock and embedd unlock code into IMG file. In everything else follow outlined steps.
If you have a CTP13 model, don't worry about putting the unlock code in the map UNLESS you've already done it once. The map will successfully install without it. If, however, your system informs you that your maps cannot be unlocked after the installation is complete, you would have to use an unlock code. It can either be embedded in the map (I've not tried this) or simply create a gmapprom.unl file with the code pasted inside of it along with the gmapprom.img file.
Personally, I don't care for altering the gmapprom.img file in any way. I've wasted enough time with different gmapprom.img files that I'll only try clean files downloaded directly from Garmin.