For some Motorola Droid RAZR owners out there, this Christmas was a very Merry one indeed. As it turns out, Verizon had accidentally flipped the update switch, and some owners got a very early update to Android 4.1. Unfortunately, the switch was flipped off eventually, but not before a good number of people got the update. Now, that build is available for developers and users to try out and work from.
XDA Senior Member spc_hicks09 managed to grab the update as it was being pushed and uploaded it for all to have. Along with the download, spc_hicks09 has also provided a rather extensive set of instructions for users who want to install it. There are some risks though, as spc_hicks09 explains:
CAUTION!!!!! AFTER INSTALLING THIS UPDATE, IT IS COMPLETELY IMPOSSIBLE TO GO BACK TO ICS!!! YOU HAVE BEEN WARNED!!
So if anyone is thinking of flashing this, do keep in mind that you won’t be able to go back—at least not yet. The good news is that if you follow the instructions precisely, you can even maintain root.
For additional details, check out the update thread. Just be sure that you are fine with the possibility of not being able to revert back to ICS after updating._________