Old and new to this community but asking for advice re my Garmin 52LM satnav which after a few years not being used, only turns on randomly. Already tried new battery and soft and hard reset. Never know if it will jump in to life or not. When I do manage to connect to desktop computer it says the software is version 4.0. But when I google for latest software, Google says there is a version 7.0, but Garmin Express says software is up to date. So I am puzzled and I was hoping that if I could find a more recent satnav software version it would perhaps solve the on/off problem. Connections, chip, plugs, cables all good. Thanks.