OK, what I've done is zip the info page (pdf) and all the files I used to upgrade my maps, and will provide the link below. (436mb)
Thanks to Mousie's input, I also added info about activating a Larado's nav icon, which must be done before it will accept any maps/licences.
First, a caveat: These files did work with my '14 Overland, which already had maps, albeit 2012 vintage. Mousie has noted that each vehicle, each year model has variances that may prevent a file from doing what we expect it to do. So, while anyone is welcome to download and use the files, I can't give any guarantee that they will work on your car.
Having said that, You'll never know if ya don't try...
The rar file should unwrap to a folder, 'Map UPG Files', which, in turn, will have 7 sub-folders. In each sub-folder there is a single script.lua file that you use for a particular job. (Except for the 'Essentials' folder, which has some modified files to copy as you work thru the list.)
I've tried to colour-code as much as I can to make it a bit easier.
PLEASE READ the Introductory sentences, as they explain what we hope to achieve:
https://mega.nz/file/uiBV1K4C#yxqrv-...gf5lXnapcDS42A
Have fun! If I can, I'll clarify anything not understood. I'm away from home atm, and can't monitor my emails very consistently, so be patient...
Eskymo (Rob T)