I have a nuvi 1490 with 2 maps on it. 1=CNLower49states and 2=Some land ownership mappping. I also have a rino 530 hcx with the same land ownership mapping. What I want to do is put the CN on the rino also . I have to put the sd card from the rino is the nuvi and then I can write files to the sd card. I cannot see the rino in my computer but can see the rino with mapsource.

I have pulled the CN from the nuvi and ran the .img unlocker and also put in Mapsource using gmap, it is unlocked there BUT I cannot get it work on the Rino, the files are both in the Garmin folder with the namse as follows. It just does not see it.
gmapsupp.img
gmapprom.img

I have tried to change names of files and did not work for me.

It is kicking my butt.