NAVTEQ North America, LLC, 3630 Raines Road, Memphis, TN 38118, telephone 1-866-629-3212 or www.navigation.com
You have to provide your VIN at purchase. The current cost is $149.00 with free shipping. They'll send you 2 discs, 1 DVD (Navigation Map Update North America) & 1 CD Navigation Radio Software Update). They will provide you with a PASSWORD to use when you update. Both updates take approximately 1 hour.
You can also order the updates thru your local Jeep dealer or have the Jeep dealer install them while you wait in lieu of purchasing your own. Be leery of eBay cause your radio serial number & VIN number have to match. If someone else has used the discs before, they will NOT install on yours as each time you turn on the radio, it runs an activation thru the satellite radio prior to displaying the navigation on your screen.
I hope this helps.