You are a bit lazy, aren't you
1) Settings > navigation map > Data Fields...
2) Look in options
3) absolutely unnecessary, but you can use Arimi's ari_GPS-2D-3D_button ux
4) proper lang file, proper voice file, proper software settings and proper sys section
[Only registered and activated users can see links. ]
5) just proper settings in sys file. Mentioned many times...

Probably one of your compatriots will help you more.