There was a Jelly Bean update accidently released around Christmas time.  You can download the file from this link and then copy it onto an SD-Card and update the phone using these directions:

1. Turn off the phone
2. Hold The Power Button, Volume Up and Volume Down buttons… I know it is awkward but that is the only way to do it…
3. A Boot Screen will appear, use the volume down button to go to Recovery
4. Press the volume up button to select it
5. When you see the Android bot with the exclamtion mark press both the Up and Down Volume buttons.
6. A menu will open up use the volume down button to move to “install update from external storage”
7. Press the power button
8. Use the volume down button to highlight the file on your SD Card and then press the power button again.
9. Enjoy the Update!

It does take a little while to install the update since it has to change a lot so don’t worry if it seems like it is never ending.