Go to settings /developers options and check usb debugging mode.
1. Power off your phone.
2. Press both volume keys and the power button at the same time to boot into recovery.
3. Select ap fastboot mode.
4. Plug your phone into the computer and start the razr utility.
5. Select the option to restore phone to stock gingerbread I believe it is number 1 but I am not sure on that version.
6. Follow the on screen prompts, and let it run. It usually takes about 10 minutes. It will reboot your phone a few times, and then your phone will be back to stock.
Don't forget to have at least 50% charge before doing this!
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