Thread: Help with nuvi 2597LMT and using new maps

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!!

Originally Posted by crow0

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.

Yep that should do it Autodrive is on Thank you all!