Before I Start: Question about updating from 1.0 to 3.4

You will have to manually create it, the app only works for 3.x…

You can take this as a reference/Guide → 2016 Mustang Sync3 1.0 updated to 3.0 and no Apple Carplay! - #10 by SaNdMaN

One thing that changed since then, is our ISV DB gives you the option to download the autoinstall.lst file needed for installing the downloaded file…