Quote Originally Posted by crow0 View Post
the only thing I can think of is that when I updated from Garmin site it locked the ability to read unlocked maps maybe I cant think of sth else!!
In your case, NT maps cannot be altered (ie you cannot unlock it by any unlocker), but unaltered signed NT maps (with FID < 2200) should work using UNL file created by means of JM-KG-ChecksumFix.