KM-Miles & Map Install Guide

I’m putting together a complete, written walkthrough that shows me two things: 1. How to switch any Audi, BMW or Volkswagen cluster / navigation unit from kilometres to miles, and 2. How to load the latest navigation maps on those same cars, model-specific... (Budget: £20 - £250 GBP, Jobs: Automotive, Automotive Engineering, Coding, Documentation, Instructional Design, Software Documentation, Technical Documentation, Technical Support, Technical Writing, Word Processing)