Hi again, could not get it to update that way, But i just talked to one of the Swedish service engineer at FURUNO who gave me the correct files, GD-1720C Cmap 1.06,GD-1720C Cmap 1.08 and 7inch GD-1720 v04.04, and it updated right away. But it didnt resolve my radar/standby issue.
Regards Patric.