I must be fuc*'ng dumb.

I downloaded all the softwares that I could find.
I have this unlocked gmapsupp unlocked image file that is in a folder named "garmin" on an SD card and anything works. I also have it directely on my computer.

I'm lost on trying one thing with a software, fail, try something else, fail and become lost in repeating so many times the mistakes that I'm going crazy,not knowing what I tried or not.

For instance. GPSmapedit is telling me that my file is too big, that it's only supporting files below 2GB (That's exactely what I'm trying to do). It is telling me to use GMaptool to divise is in smaller pieces.
What I did and now I have a folder with 189 images files that any of it are opening.

That's it for me today. I'll keep on trying until I have it, even if it's taking years but it's begining to play with my nerves...