With all the crucial bug fixes and patches, including the missing “December” from the People app, Android 4.2.1 Jelly Bean update was pushed out by Google earlier this week for all the Nexus devices.

If your device has already received the Android 4.2.1 Jelly Bean update as an OTA (over the air) package, you can go ahead simply installing the new firmware version. But if you are yet to receive any such update and can’t wait for it any longer, click here for the steps to manually flash your device with the help of the ZIP package from the Internet.

If your device is already running on the new Android 4.2.1 and you are now looking for a root method or package for the latest update, we have got you covered. Thanks to the Android developer community, the all new Android 4.2.1 Jelly Bean is rootable on all the devices – Nexus 4, Nexus 7, Nexus 10 and Galaxy Nexus.

As Redmond Pie pointed out, the method for rooting Android 4.2.1 on Nexus 4, Nexus 7, Nexus 10 and Galaxy Nexus involves flashing a custom recovery and pushing the SU binaries to the respective device.

Below are the steps to root Android 4.2.1 on the aforesaid Nexus devices. But before going ahead, the users must note that although the procedure is a tested one, IBTimes will not be held responsible for anything that goes wrong. The users should proceed at their own risk.

What You Need

- Android 4.2.1 JOP40D

- One of the supported devices with an unlocked bootloader

- SuperSU binaries

- ClockworkMod Recovery 6.0.1.9

- Android Debugging enabled on the device

- ADB installed with fastboot

- At least 70 percent charge remaining on the device

Although this method should not wipe anything from the device, the users are still recommended to backup their data as a precaution.

Method

Step 1: Connect the device to PC and put the SuperSU ZIP package at the root of the internal memory.

Step 2: Place the recovery IMG file at a convenient location on the connected computer.

Step 3: Reboot the device into bootloader mode and make sure it is still connected to the PC.

Step 4: Launch a command prompt session and navigate to where the recovery image was placed. Run the following command:

fastboot flash recovery recovery-clockwork-6.0.1.9-grouper.img

[The last part is the name of the recovery file. If the downloaded file was renamed, change the name in the command accordingly]

Step 5: Select recovery from fastboot menu and you’ll be taken to the newly-flashed ClockworkMod recovery.

Step 6: Choose Install ZIP from SD Card and then Choose ZIP from SD Card.

Step 7: Point to the SuperSU package and flash it.

Step 8: Once flashing is complete, reboot the device.

[Source: Redmond Pie]

After the reboot is done, you would have root access on your Nexus 4, Nexus 7, Nexus 10 or Galaxy Nexus running Android 4.2.1.

UPDATE: How To Root Galaxy Nexus I9250 On Android 4.2.2 Jelly Bean (JDQ39) Official Firmware And Install CWM Recovery [Tutorial]

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