Quote Originally Posted by catymag View Post
@persep
on sd just one gmapsupp.img is supported and must be in a folder named Garmin
you can merge 2 maps with gmaptool
I finally did it...all img from the gps and from the sd card have to have whatsoever name you want. ie not gmapsupp nor gmapbmap nor other from garmin, if not it won't work. I have one map in the unit and 3 in the sd card all with different names. I have colorado 300 software version 3.40