All the original soft are in the nextar gps internal memory, i did not "touch it". The original map is in the sd card.
Now i have another 2 sd card, one with igo primo and another one with Garmin XT, I'm playing with both. Igo Primo works pretty good but the gps always start in wince, Garmin xt works pretty good also but did not find the map so probably is not in the wright place.

Make a complete back up of your internal disk before you do anything else. If Primo is working except that it starts in WinCE then consider that good. Remember, IF IT AIN'T BROKE DON'T FIX IT! Garmin problems should be asked in the Garmin section.