Thank you!

I have all those additional things:
CN North America NT 2017.30_SID
CN North America NT 2017.30_JCV
CN North America NT 2017.30_gmap3d_un
CN North America NT 2017.30_g2s_sql_gpi
CN North America NT 2017.30_Foursquare
and you never really know where you should put them on the SD card (and keep the folders inside or not).

I tried to follow what's indicated on the forum but i guess it depends on the GPS unit...

Thank you again to be so kind!

May i ask why there won't be copyrighted stuff on this forum anymore?