Rafaelz, I ran into the same issue trying to update my radio. I am actually just another Jeep owner like yourself, and I have been working with Uconnect to try and get the update to work on my Jeep. They are concerned with the update not working for me, and they asked me not to post the links to the files until more testing can be done.
Where are you located? Do you have European or North American WK?