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Stock and Rooted Factory Image Based ROM for Galaxy Nexus i9250 to Update to Jelly Bean Android 4.1

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Google recently posted the official stock Android 4.1.1 Jelly Bean factory images for Galaxy Nexus (as well as other Nexus devices). Factory images are what you would call stock firmware which can be used to reset the device to a new state and are also the latest and most updated firmware.

XDA Senior Member teshxx has released a rooted and deodexed (deodexed means you’ll be able to flash custom themes later) Jelly Bean ROM for the Galaxy Nexus based on the official factory image, which can be used to update to Android 4.1.1 manually. This ROM is completely stock except for the fact that it is already rooted. It is also faster than the previous OTA based ROM that came out, according to reports.

Let’s take a look at how you can update Android 4.1.1 Jelly Bean using the stock rooted ROM.

Compatibility

This ROM and the guide below are compatible only and only with the international GSM Galaxy Nexus, model number i9250. It’s not compatible with Verizon/Sprint variants or any other device. Check your device model in Settings » About phone.

Warning!

The methods and procedures discussed here are considered risky and you should not attempt anything if you don’t know completely what it is. If any damage occurs to your device, we won’t be held liable.

How to Install Stock Rooted Factory Image Based Jelly Bean ROM on Galaxy Nexus

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  1. This procedure will wipe all your apps, data and settings. Backup your Apps and important data — bookmarks, contacts, SMS, APNs (internet settings), etc. This Android backup guide would help you.
    NOTE: Don’t forget to at least make a backup of your APN settings, which you can restore later if your data connection does not work after installing the ROM. Use the backup guide to find out how.
  2. Unlock the bootloader on your Galaxy Nexus by following the guide → hereThis will erase all your data, including the data on the SD card, so back everything up first (see step 1).
  3. [Important!] Install TWRP recovery on your Nexus by following the guide → here. Make sure to flash the GSM version of recovery. You need recovery to be able to install the ROM and can also use ClockworkMod recovery instead of TWRP.
  4. Download the latest version of the ROM from the development page. Be sure to download the deodexed version.
  5. Copy the downloaded zip file to the SD card on the phone (do not extract it).
  6. Turn off the phone and boot into TWRP recovery. To do this, press and hold the Volume Up + Volume Down + Power buttons together till the screen turns on. Then, scroll to the Restart Recovery option using the volume buttons, then select it using the Power button to restart in recovery.
  7. Now, tap on Backup, then slide the blue circle button at the bottom to the right to start backing up your current ROM, so that you can restore it later if something does not work out with the new ROM. After backup is complete, go back to the main menu by clicking the home button at the bottom left of the screen.
  8. Select Wipe, then select Factory Reset and then confirm the data wipe. This will not wipe your internal SD card’s contents, so do not worry. Then, go back to the main menu by clicking the home button after wipe is complete.
  9. Select Install, then scroll to the ROM’s file on the SD card (which you transferred in step 5) and select it. Confirm installation by sliding the blue button.
  10. After installation is complete, select the Reboot system button to reboot the phone and boot up into stock Jelly Bean Android 4.1.1.

Congratulations! Your Galaxy Nexus is now running the latest Android version – Android 4.1 Jelly Bean, rooted already. Let us know how it works!

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