The map CN NT NA 2013.10 is the old map:current version 2013.30 INDEX docet...

The file/archive Unlocked IMG ,is pretty for nav/SD for all device.

For installation on nuvi, read this [Only registered and activated users can see links. ] ( paragraph Older Nuvis like 7x0 and 7x5 or 2x5 etc and outdoors units dont have hidden folders )

Bye,bye