The map is always the same for all nuvi (we are not writing in section TT... )
Is the OS that processes map data, even those trucks

There are only a couple of additional files for trucks models: a *.Gpi (database Way point specifics) and a file *.db (or *.sid) for the series dezl (database Traffic specific)

Read here [Only registered and activated users can see links. ] and [Only registered and activated users can see links. ]

Bye,bye