Root Galaxy Nexus I9250 on Jellybean 4.2 Firmware – Easy Tutorial

GoogleIrrespective of Whenever & Wherever, you can now take out your Galaxy Nexus powered with the freshly brewed Jellybean 4.2 firmware update for rooting the same as very soon a fresh new wave of custom ROM firmwares will be knocking the doors of various developer websites so that you can make the most of your Android. The best part is soon after Google released the Jellybean 4.2 source code, it made its way to AOSP. Please note that you will have to make sure that you follow all the below mentioned express pre requisites so as to smoothly apply this firmware update.

Note: This workaround will only work on the Nexus I9250 Unlocked GSM model which is on the Stock Jellybean 4.2 firmware. Rooting will void the warranty, the only way with which the warranty can be reclaimed is by re applying the Official / Stock Firmware of Jellybean 4.2 in your Galaxy Nexus by following the steps mentioned in the corresponding link.

Express Pre Requisites:

  • It’s mandatory that you backup all your data present in your device with the help of below mentioned steps as there is a probability that the data in your device might get erased or deleted in the process of rooting.

SMS – Use “SMS Backup & Restore app”,
Contacts – Sync with the Gmail application,
Call Log - Call Log and Restore
Images, Songs, Videos, Files – Copy to internal / External SD Card,
APN and MMS Settings – Note down from the path “Applications > Settings > Wireless and Network > Mobile Networks > Access Point Names

  • From the path “Settings > Applications > Development > USB debugging”, enable the USB Debugging, ensure that the USB debugging option is ticked. Also, make sure that the minimum charge left in your device is minimum of 40% so as to make sure that your Galaxy Nexus doesn’t give up in the middle of rooting process.

Disclaimer: Follow all the instructions mentioned in this article as if there is any damage caused due to not following instructions then we shall not be held liable or responsible. Just in case if you face any issues then we will try our level best to address the same.

So assuming that you are done with the above mentioned steps, you can now head over to the next page where we have summed up a detailed tutorial on how to root your Galaxy Nexus device.

Procedure to Update Galaxy Nexus I9250 on Latest Stock Jellybean 4.2 Firmware:

  • Now, just in case if your computer is installed with the ADB, keep your phone connected, open command prompt to enter the command as,

ADB Devices (it will list the connected devices),

ADB Reboot recovery (this command will reboot the device in the recovery mode automatically)

  • Just in case if you haven’t installed the SDK in your computer, disconnect the device from computer and turn off your Galaxy Nexus so that it can be entered in the recovery mode. Now, keep pressing the Volume Up + Volume Down rocker keys and continuing pressing these both rocker keys, press and hold the power button to enter the device in the boot loader mode with a green robot. Now, keep pressing the Volume Up key till you see the “Recovery Mode” message at the top most part of the screen and then press the Power button to confirm the same.
  • Now, select “install zip from SD Card” to find for all the zip files present in your Galaxy Nexus device, select the Clock Work Mod recovery zip package followed by the Superuser package files which you have placed these files in your device.
  • Once the zip packages are selected, you now will have to wait for the same to process the same. It will take round about 4 -5 minutes for applying the same.
  • To check on whether the firmware is rooted or not, you will have to check the same from the application called “Root Checker”. Download the Root Checker app from the Google PLAY Store and check whether your device is rooted or not.

Note: Just in a rare case if the device doesn’t boot up or show the home screen then remove the battery and reinsert the same to boot the device again in the normal mode.

Do share with us in the comments section just in case if you face any issues as we will try our level best to sort out the same. So there you go, you have now successfully learnt on how you can root your device with the help of above mentioned guide.

4 comments

  1. Uferstraße 18

  2. Hi!,

    I have tried rooting my Galaxy Nexus and each time I reboot into Jellybean after applying the superuser.zip, there is a message saying “Android is upgrading” and then the phone is not rooted. The su binnary is there and apparently with the good permissions, however, I cannot use it and superuser does nothing.

    What could be the problem? Any steps to fix it and get it trully rooted?

    Thanks!