Google's fourth generation Nexus smartphone was launched with Android 4.2 Jelly Bean software. In February, Google rolled out the latest version of Jelly Bean software, Android 4.2.2 with base firmware JDQ39, for the Nexus 4. This update reportedly removes the unofficial support for LTE and brings several small changes such as enhanced quick toggle that can be long pressed to toggle Wi-Fi or Bluetooth.

Google Nexus 4
The Nexus 4 is currently running on Android 4.2.2 Jelly Bean. 

Nexus 4 users who have already upgraded their devices to Android 4.2.2 now can root the same. Recognised XDA developer, Chainfire recently released CF-Auto-Root file allowing Nexus 4 users to root their handsets without any difficulty. The CF-Auto-Root method is said to be the safest root method available so far.

The developer has, moreover, shared an easy root guide. Head over to the development page to learn more about the root release.

Nexus 4 users, who wish to root their devices running on Android 4.2.2 Jelly Bean, may follow our step-by-step guide.

IBTimes UK reminds its readers that it will not be held liable for any mishap. Users are also advised to verify that their devices meet following requirements.


1) As the tutorial is likely to wipe out all data of the phone, create a backup. If the device is having any custom recoveries such as ClockworkMod/TWRP already installed, then back up data using the recovery.

2) Enable USB Debugging Mode on the phone to connect the Android device with the computer and use the Android SDK with it. [Press Menu>> Settings>> Applications. From there navigate and click on Development option and ensure the USB Debugging Mode is turned on.]

4) The Nexus 4 should have above 80% battery charge.

5) The bootloader of Nexus 4 should be unlocked. Click here for guide to unlock bootloader of Nexus 4 using All-in-One toolkit.

6) The phone should be factory unlocked.

7) The device will lose its manufacturer's warranty once it is rooted. Users can reclaim the warranty back by unrooting the device later.

8) The CF-Auto-Root file works only on Google nexus 4. Applying this to any incorrect variant might brick the device.

Steps to root Google Nexus 4 on Android 4.2.2 Jelly Bean

Step-1: Download and install Android SDK. This includes the necessary drivers for connecting the Nexus phone to the computer, which is mandatory for the rooting process

Step-2: Download CF-Auto-Root package for nexus 4 to the computer

File name:

Step-3: Extract the downloaded root zip file using winrar/7zip/winzip or any other extracting tool

Step-4: Power off the Nexus 4. Now boot the device into bootloader/ fastboot mode by pressing and holding Volume Up, Volume Down and Power buttons together until the device turns on

Step-5: Connect the phone to the computer using the USB cable while it is in the fastboot mode. Wait until Windows finishes installing the drivers

Step-6: Navigate to the folder where the CF-Auto-Root file is being extracted. Then run the following command

a) For Windows users:Run root-windows.bat

b) For Linux users: chmod +x


c) For Mac OS X: chmod +x


Step-7: Follow the on-screen instructions to root the phone. Keep watching both computer and the device

Step-8: Once the rooting procedure is completed, the phone will boot into normal mode. Unplug the USB cable from the phone to disconnect it from the computer

Nexus 4 running on Android 4.2.2 Jelly Bean should now be rooted successfully. Open the app drawer of the phone and search for an app called SuperSU. Users can also verify the root status by installing Root Checker app from Google Play Store.

Note: Sometimes the red Android logo during rooting appears but SuperSU does not come. This happens due to left-over files and settings. However, users can directly install SuperSU from Google Play.

Click here for guide to root Nexus 10 on Android 4.2.2 Jelly Bean.

[Source: Honai of Android]