It seems that the developers are working really hard to bring the firmware updates for Android devices with recent android 4.2 jellybean updates. This is the reason that, after a very short time of Google releasing the source code of Jelly Bean 4.2, it has rolled out for the Galaxy Nexus I9250. If you own this device, then this article is going to be helpful for you as I am providing the complete step y step tutorial in it. So lets proceed ahead.

android Jellybean 4 2 Firmware on Galaxy Nexus I9250

Steps To Follow Before Updating

  • Start the process only when your battery is charged at least 70 percent, otherwise power may create some problems during the process.
  • Back up your device user storage files like SMS, Contacts, Call Log, Images, Camera snaps, Songs, Videos, Files to External SD Card or external device storage device.
  • Remove the security apps/antivirus from both the PC and phone as it may interrupt the process.
  • Take the backup of entire important data so that in case, any unpleasant happening is there, you can get back to the normal point.
  • Enable the USB Debugging. You can do so by navigating to Settings > Applications > Development > USB debugging.

Before start your Firmware CM9 Android 4.0.3 ICS Nightly Build install on Samsung Galaxy Nexus I9250 read carefully Disclaimer and warning from our team.

Galaxy Nexus I9250 on android 4.2 Jellybean Firmware

  • Download the Jelly Bean 4.2 rooting package from here and Superuser Zip file from here. Extract this file in your computer.
  • Connect your phone to computer and paste these downloaded file to internal or external SD of your phone.
  • Its time to enter your device into bootloader mode. You can do so by pressing the Volume Up + Volume Down + Power buttons together.
  • Press the Volume Up button to move through the options and once you find the Recovery Mode option, click on it to enter your device into recovery mode.
  • Proceed as Install ZIP from SD card. It will take you to a new screen. Select Choose ZIP from SD card and there select the file that you downloaded in the very first step.
  • It will start the update process and will take only 2-3 minutes to complete.

Thats it. You have successfully updated your Galaxy Nexus I9250 to android Jelly Bean 4.2 Firmware. If you face any problem, then ask us in the comment section below.

Disclaimer and Warning

The rooting process is only for Samsung Galaxy Nexus I9250 Unlocked GSM model which has Official / Stock Firmware of Jellybean 4.2, because you may revert to original version to maintain your warranty. The process may lead to your devices damage and . So follow the process at your own risk.