Recently Motorola released Android 4.0 Ice Cream Sandwich update but it voids root access and rooting is what you purchase Android device for. Hardworking guy behind XDA “hacker812c” have achieved the root on Motorola Razr running Ice Cream Sandwich, root works on both variants of Motorola Droid Razr GSM and CDMA.

Here’s step by step guide to root your device on ICS, but first make sure that USB debugging is on from Menu> Settings> Application> Development. You also need to check the Media device option. USB drivers should be installed on the computer, download them from here. Charge the device battery and make a backup of your device data such as SMS, internet setting, contacts music files etc because the below procedure may wipe data, you can sync your contacts with Gmail account and for messages use SMS apps, lastly use file expert app to backup apps.

DISCLAIMER: Please proceed the below guide at your own risk, Android Egis will not be held responsible if your device lost data or get damaged following this guide.

Instructions

Step #1: Download the Rooting Exploit and script to your PC.

Step #2: Unzip the downloaded zip file into a folder.

Step #3: Plug the device to PC using USB cable.

Step #4: Open the folder where you’ve unzipped the above downloaded file and run the exploit to root the device.

Step #5: If above exploit doesn’t root the device, you can root the device manually. To root manually, first download the su and debugfs to PC.

Step #6: Mount the SD card of device and copy the downloaded files to SD card or “adb push” them to /sdcard.

Step #7: On your computer in a linux terminal/Windows command prompt:
commands at the prompt is started after the symbol #

Step #8: Run all commands and if reboot not run open new prompt and enter adb “reboot”

Step #9: At this point run sequence commands and reboot with “adb reboot” or with shutdown

Step #10:  Open the Google Play store, download superuser.apk and install on device.

Step #11: Now download the OTA ROOT Keeper app and backup your root access.

Step #12: At this point run the following commands:

adb shell

shell@cdma_maserati:/ # cd /sdcard
shell@cdma_maserati:/ # cp su /data/local/12m/
shell@cdma_maserati:/ # cp debugfs /data/local/12m/
shell@cdma_maserati:/ # cd /data/local/12m
shell@cdma_maserati:/ # chmod 755 su
shell@cdma_maserati:/ # chmod 755 debugfs
shell@cdma_maserati:/ # mv batch batch.bak
shell@cdma_maserati:/ # ln -s /dev/block/mmcblk1p20 batch
shell@cdma_maserati:/ # exit
adb reboot

Step #13: Once the device is rebooted, enter another following command:

adb wait-for-device shell

Wait for android shell:

Code:

shell@cdma_maserati:/ # cd /data/local/12m
shell@cdma_maserati:/ # rm batch
shell@cdma_maserati:/ # mv batch.bak batch
shell@cdma_maserati:/ # /data/local/12m/debugfs -w /dev/block/mmcblk1p20

(Enter this commands at the “debugfs:” prompt)

debugfs: # cd xbin
debugfs: # write /data/local/12m/su su
debugfs: # set_inode_field su mode 0104755
debugfs: # set_inode_field su uid 0
debugfs: # set_inode_field su gid 0
debugfs: # quit

shell@cdma_maserati:/ # cd /data/local/12m
shell@cdma_maserati:/ # rm su
shell@cdma_maserati:/ # rm debugfs
shell@cdma_maserati:/ # cd /
shell@cdma_maserati:/ # reboot
shell@cdma_maserati:/ # exit
adb reboot

That’s it, your Motorola Droid Razr is now rooted, now you need to open the Google Play Store and download the Super User app and then install it on your device. Please bear in mind that if your Motorola smartphone refuse to root or gets boot loop mode, don’t worry, just follow the above steps again to root your device. You can also visit the original thread of XDA here for more information and to thanks/donate the developer for this great effort, enjoy your rooted Motorola Droid Razr running Android 4.0 Ice Cream Sandwich.

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