Here's the link for the 2012 Uconnect SW update for vehicles built prior to 1-1-2012 and have either of the following radios:
RES, REQ, RBZ or the RHB
and the instructions are:
Download this file that I have on Mediafire onto a thumb drive and : Place this thumb drive in the USB connector mounted either in the glove box or the center console. Press & release the uconnect phone button and say “set up, software update”. You will start to hear some beeps. This process will take about 20 – 25 minutes. It’s a good size file. During the beeps, the radio screen will in an update mode, when the beeps are done and the screen goes back to the radio then the process should be complete. Just wait for a few seconds after the radio starts to play before removing the thumb drive. Turn the key off, open & close the driver’s door. Wait about 30 seconds then turn the key on. After radio powers up wait about 15 seconds, then press and hold the uconnect phone button for about 15 seconds, the radio will start to say a few options and then something like please attach usb….. And then there will be a software version that comes up on the screen. Should be 63.02.48 V: HS: d2 (or D1). When you see this, release the button, press and release it again. The radio will show the radio screen now.
You will also need to delete the current pairing of the phone to Uconnect and the Uconnect to the phone, then start the new pairing session.