Well after 9 hours and countless downloading
Even managed to get F/W 5218_Mod on it, but ended up with no sound, so have rolled it back to 3810_Noru, Just having to create a map disc now, as the installs wiped out the maps
So out of 15 Discs, and 4 different web sites for downloading and 3 different pc's/laptops, I have so far managed to create 2 working discs ( F/W 3810A_Noru & F/W 5218_Mod )
I'm going to try and get to F/W 4120, as I really fancy Radio Text ( Sad I know )
I can only imagine this is why so many RNS510's are not updated, because it is a complete arse ache.