@tiger555

You wont see 3D buildings like other nuvi with 3D support.
But if you like to see buildings outlines in center of very big towns and capital you must add gmap3D.img.

Try in your country and you will see what Giomen say.
First go to big city and zoom to 80m whit 3d enabled than go with 3D disabled.

For all user,please first try and only than write if work or not.


p.s.
If i tell you that DEM.img from nuvi 37xx work on nuvi 1xxx you will say,NOT.
But is work,just try first and dont go always in Garmin site and read from there.
On garmin site is also writen that all nuvi suport only 2Gb SD card,but we all know that support up to 32Gb SD card