The keygen method does not work for maps with map id over 2200, use other methods for unlocking. Try the unlock mapset.exe, can be found here:
[Only registered and activated users can see links. ]
Use the sticky index files to find info in the forum.
To get the best out of your gps for MC use re-typing the maps is very useful in order to get the best readabilty, especially for topo maps but also CNEU will be much easier to read if you change it to more black/white appearance for higher contrast. Use TYPviewer for this job.
Can be found here:
[Only registered and activated users can see links. ]
When working with TYPviewer it is important that you use the correct map id in the typ file.

O.T. My Kawasaki Versys 650 is equipped with two gps:es, GPSMAP276C with CNEU typed black/white for navigation and route finding and Nuvi200 with Topo maps for terrain details!