Thread: How to install multiple maps on Garmin the easy way

Originally Posted by cruxader

Just tried this on my old nuvi 370.

The 4th & 5th map:
4) rename map4.img to gmapsup2.img and place in Garmin folder. Repeat the process to unlock the map, and name gmapsup2.unl

5) rename map5.img to gmapsupp.img and place in Garmin/App/ folder. Repeat the process to unlock the code, and name gmapsupp.unl and place in Garmin/App folder. This last map doesn't always work though.

does not work!
Anybody experienced success with Nuvi 350/370s?
If so, what firmware version?

Hi,

Nuvi's have problems with multiple maps, only one map per device (one in device and one in SD)

Try to merge them with this tool
[Only registered and activated users can see links. ]

Put all unlock codes in one .unl file (no gap between: 1 code - 25 chars, 2 codes - 50 chars, ...) per device, named as .img file

:000a4: