Maps with FID greater than 2200 cant be unlocked with JM and .unl file.
Newer maps digitally signed cant be unlocked in 64 with unlockers we used till some months ago.
You can unlock your maps with gimgunlock+mapsigpatch except NTU (Unicode) maps.
[Only registered and activated users can see links. ]
and remember to remove .unl from device if you use the unlocker, if an .img is unlocked you mustn't add the .unl file