ok so after making some more research i came with two jcv files... D3191060A.JCV and D3060070A.JCV for the north america 2013.20 garmin map... which one of them will work better with my garmin nuvi 40 unit??
for the uerope 2013.20 garmin map i got the D2504090A.JCV and D3084060A.JCV one of those files is for split junction view and the other for full screen junction view