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

It is very positive, if person, who make his first post, is so educated! After some time we can hope to get all problems solved.
I have been spending also lot of my free time to understand at least something and this what I found, I shared with you.
In following I confirm my working set up on Nokia E90 and Mobile XT v 500.50:

gmapbmap - Worldwide Roads Basemap
GMAPSUPP - CN Europe NT 2011.40 (Põhja_Euroopa ja UK)
gmapprom1 - BlueChart Atlantic v9.5 (Atlantic ocean, Indian ocean, North Sea, Baltic sea, Black sea)
gmapprom - E&P (Estonian inland waters Peipsi); Regio Baltic v1.6
GMAPSUP2 - Regio Baltic 1.6

The file gmapprom I got when I joined Est inland waters lake Peipsi and Regio Baltic 1.6 with Gmap tool. I was myself also a bit surprised, that I had one map twice. Would like to say that Regio Baltic under file name GMAPSUP2 did not work when I had same map installed into memory of my sd card under name gmapprom. After that I removed all map files to an other location at my sd card. First I loaded plain inland water map under name GMAPSUPP. I got message, that detailed maps does not support routing. Now I installed under same name the Regio Baltic - no messages...
Now I will look for a map, what could be useful to install under free GMAPSUP2 name, I let you know

If someone believe it to be useful, then please use it for your fun!