Well, I couldn't make the unit to work with a SD card different than the factory installed one (I tried all the suggestions here, but couldn't make it work), so I finally decided to take the lock switch off on the original factory card and add an unlocked map as gmapsupp.img, as well as some vehicle images. It worked!!! I'm now using a 2013.2 map and have some different vehicles to select.

Thank you everyone, I really appreciate all of your help and suggestions. I learned that this forum has some real smart and helpful people, as well as learned a lot from the Garmin system, thanks to you!

PS: Does anyone know where I can get a voice file (.vpm) that is in latin american spanish? (Or Mexican Spanish) The one that comes with the card is in Spain Spanish and is a little annoying.

Thank you VERY MUCH!! :D