Quote Originally Posted by ionutzdan02 View Post
Have you tried to create the map in mapsource or mapinstall and then create the unl file with the unlock code?
The JM generated unl code by itself won't even work in any recent nuvi [or for that matter older series with recent firmware] using maps with FID 2200 and over because of GMA protection. Read this: [Only registered and activated users can see links. ]. Then read both of the threads linked in the initial post there and by lolypop000 in post #2 above. The OP has a nuvi 2559, all 2xx9 and other recent such models have a novel protection which has not yet been overcome.