I have a Droid Bionic and Verizon Wireless. I got the ICS update and like many, it really messed up my phone. I was told by a co-worker that I could root my Bionic and install Jelly Bean.
I did the first step and rooted it using the instructions here: droidbionicroot.com/ . I used the first example "How to Root ICS on Droid Bionic and Motorola Android!" and it seemed to go well. I ran the bat file and it rebooted the phone 3 times and said it was successful. It did have one error as it processed the 2nd reboot, but it seemed to go past it and gave me the Congratulations! message.
I do not see a difference but I did go to System settings > About phone and although I did not write down my previous version, I do know it is now different. It is now: System version 6.7.246.XT875 Verizon.en.US, Android version: 4.0.4, Build number 6.7.2.-223_DBN_M4-23 (please let me know if you need anything else).
For Jelly Bean I downloaded the files: cm-10-20120824-UNOFFICIAL-sholes.zip (Jelly Bean) and gapps-jb-20120726-signed.zip (Google apps). I put them on my SD card. I did the Restore Boot and chose the firmware from SD card option.
All was running well until it said: "signature verification failed." "Aborted."
My phone is not bricked. It seems to still be using ICS like prior to all this.
How can I root my phone and get Jelly Bean on it?