Re: Worldwide routable Garmin maps: URL REMOVED

I'm not sure if this kind of problem is supposed to be discussed in this thread, if I'm wrong suggest where to post it.
I downloaded the generic new file of Italy last week, gmapsupp.img and installed it on my garmin nuvi 205.
Yesterday I entered a destination for my wife. Unfortunately I didn't check the path created by the nuvi and after a few minutes she called me upset because the navigator sent her to the wrong highway.

At this Osrm link you can see the right track: http://osrm.at/atS
This is the track suggested by nuvi: http://osrm.at/atV

I tried the same start-destination track with different navigators and only the nuvi 205 gives the wrong result.
OSM data seem to be ok.

What happened?

Thank you
maxx