to unlock the IMG files
Connect your unit as a removable drive again and open (or create with notepad if you dont have it already in your Garmin folder) the SW.UNL file in Notepad. Paste the CARD ID unlock code in. Resave the file. If you are using locked maps, open( or create) GMAPSUPP.UNL with Notepad and paste in the map unlock code. You should now have unlocked software .(caution! no txt ext )
Now we have this tool to create your SW.UNL and GMAPSUPP.UNL
[Only registered and activated users can see links. ]