After you download the file, you will need to (uncompress) the information in the .rar file with a Mac-compatible utility, like:i also have the 6 1 code. i have tried to down load this page several time ovre the past and can not get any thing to work. my computer will not open the format. i have a mac air. i do have drop box still nothing.
since some of you have the app. can you tell us how to fix or were to look to fix the ground problem?