I have owned my 2016 Octavia Scout for over two years and all of a sudden the Satelite Navigation has stopped working.

When I try to use it I get the following error message:- 'The navigation data in the infotainment system is not valid. Please check data.'

I have tried a soft reset of the system to no avail. Everything else in the infortainment system seems to be working normally.

Can anyone kindly advise me what options I have to get it working again. (Apart from taking it to a dealer. They have taken all my money already!)​