BigHorn453 posted links to the updates on page one of this thread. I can't share the update because I have the Uconnect 8.4an RJ4 and you have the 8.4a RJ3.
If BigHorn453's links aren't working and you're not able to do the update on your own with the links I provided, I suggest you go to the dealer.
There is a Service Bulletin (or RRT) in regards to the radio enhancements, see below...
http://www.wk2jeeps.com/tsb/tsb_wk2_0804913e.pdf
I wrote last 8 digits of my vin number in my first message. You can download update use this: DS706121



