I just extracted the .exe and unlocked the .img and put the .img . jcv and .db to the proper locations on my 3790T . I just wanted to see if the JCV would work, because there are several different files here. So i selected my Location in jakarta airport and destination Bandung. It is not very far. But the route calculation is taking forever on device. Maybe 5-10 minutes. Although only indonesia .img is selected under mymaps in settings in Nuvi. Anyone knows why the calculation for indonesia takes so long? With other maps such as North America or Europe it is always very fast.