Motorola Droid 4 Jelly Bean Data Issue

Hi
Just last evening I checked the System Updates on my unrooted Droid 4 and there it was! Upgraded it.
Project Butter lives upto the mark. Works smooth like butter.

The ONLY UGLY issue am facing:
My data from the network is somehow locked, or in short, not working. Visited Vodafone gallery & they checked the settings, which were fine, but still the data is not working. The SIM when inserted on another phone, data works fine.
NEED HELP!
Please, suggest me how I can make the data work on my Droid 4!
Please!

Also, how do I root m Droid 4 on Jelly Bean?
Currently my phone is technically paralyzed because of this issue!

Thank You!!