If you are going to take your rooted Droid Razr back to Verizon for warranty replacement or even refund, you can easily unroot your Droid Razr back to completely stock.
Step 1. First you will need a rooted stock ROM. This is basically the state where you rooted your phone on a stock Droid Bionic. If this is the case, follow Step 2. Otherwise, I hope you made a backup of your rooted stock ROM and you can restore to it.
Step 2. Go to Settings->Applications->Development and make sure USB Debugging is checked on and connect your Droid Razr to your computer via micro USB cable.
Step 3. Download adb.zip and unzip, you should get a folder called adb. Make a note of where you unzipped it as you will need to use command cd to browse to it in command prompt/terminal.
Step 4. Open up a command prompt or terminal. For Windows, type “cmd” under Start-Search.
Step 5. Use command cd to get into the adb directory.
e.g. For Windows:
Step 6. Type this to get into adb shell:
sudo adb-linux shell
Step 7. Copy and paste the following to mount your filesystem as read/write:
mount -o rw,remount -t yaffs2 /dev/block/mtdblock3 /system
Step 8. Type the following to erase Superuser and root:
Step 8. Reboot and you should find Superuser app gone.
Step 9. You can now reboot into stock recovery to erase all your personal settings and apps. Turn off your Droid Razr.
Step 10. Hold down both Volume Up and Volume Down buttons then press Power button and let go when you see black and white menus.
Step 11. Choose “Recovery” by hitting the Volume Down button once then hit Volume Up button once to get into stock recovery.
Step 12. If you see exclamation mark, hit both Volume Up and Volume Down buttons at the same time until you see blue menus.
Step 13. Choose “Factory Reset” using Volume buttons and hit the Power button.
Step 14. When that’s finished hit the Power button to reboot.
Step 15. When your Droid Razr reboots, your phone should be fully unrooted and back to completely stock! Congrats!
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You will need a rooted Droid Razr to install all ROM/kernels.
NOTE: PLEASE ONLY INSTALL ROMS INTENDED FOR YOUR VERSION OF Droid Razr! Otherwise you WILL BRICK YOUR PHONE and I will not be responsible! ALL ROMs on this site are ONLY for Verizon Droid Razr!
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For emergencies (such as bootloops, cannot get phone working) e-mail me at zedomax at gmail.com with Subject EMERGENCY and make sure include the model number of your Droid Razr.