Quote Originally Posted by Neil View Post
Sorry but there is new protection in recently released units such as your nuvi 55 to prevent unofficial/unlocked Garmin maps being used. No solution for it at present.

Is there a list of units that are like this? or is it as simple as, say, all the units released in 2014? The rubber buttons are wearing out on my handheld and i'm thinking about getting another but i don't want one that has the new lock system on it.