I have Galaxy Nexus GT-i9250m. It is currently running Android v4.1.1. I am in India. I want to know how to update my phone to v4.2 officially without rooting. I have already tried checking for updates using Settings->About phone-> System Updates.

Asked similar question in gsmarena.com but to no success. Tried solution provided there to Goto Settings-> Apps-> All-> Google services and Frameworks -> Clear Data, but to no success.

Is there any way doing it manually on Galaxy Nexus i9250m without rooting the phone? Like downloading the ROM and trying to run it.


The devices which were bought from Google Play are takju and the ones from Samsung are akju. I think your phone is yakju (Google Play didn't sell Devices in India).

Takju gets all updates directly from Google. If you want to get all updates from Google at the time of release you have to convert to takju.

How Can you do that

Please follow below to convert from yakju to takju (stock) without losing your data/apps: (assuming you know adb & fastboot and have set them up on your computer. Also assuming that bootloader is unlocked) [Please read before you implement]

  1. Download the 4.2 factory images for Takju
  2. Extract files using 7-zip on Windows (you need to extract twice and will get the files as: bootloader-xxx.img; radio-xxx.img and image-xxx.zip)
  3. Copy these files to the location android-sdk/platform-tools/ (if you have the android-sdk installed or to the location where adb & fastboot is)
  4. Plug in your Galaxy Nexus (ensure Debug option is enabled under Developer Settings
  5. Follow these commands:
    a. adb reboot bootloader
    b. fastboot flash bootloader bootloader-xxx.img
    c. fastboot reboot-bootloader
    d. fastboot flash radio radio-xxx.img
    e. fastboot reboot-bootloader
    f. fastboot update image-xxx.zip

This would update your Galaxy Nexus from Stock 4.1.2 (yakju) to Stock 4.2 (takju) without losing any data/apps


  1. If you are using Windows, follow this video tutorial to setup adb and fastboot
  2. If you are on Mac, use ./ before the commands for execution

Note 2: With this method you don't need to remove the userdata.img as the command fastboot update image-xxx.zip does not touch the userdata on your device.

*Disclaimer: Tried with Unlocked Bootloader, but you follow these at your own risk.

Or you can Download factory image for yakju from here and try similar step above for just updating (without converting from Yakju to takju)

  • Does this method require rooting? I have currently 4.1.1 installed, is it advisable to directly install 4.2.2
    – jsist
    Feb 28 '13 at 13:18
  • Pls also tell, if something is messed up, how will I be able to recover to previous state.
    – jsist
    Feb 28 '13 at 13:21
  • your bootloader unlocked?
    – Akhil
    Feb 28 '13 at 13:21
  • how to check this?
    – jsist
    Feb 28 '13 at 13:22
  • When you reboot the phone, you will see a little open lock symbol underneath the Google logo. That means you have an unlocked bootloader.
    – Akhil
    Feb 28 '13 at 13:30

It's possible that India has not yet received this update yet. If that's the case, then you need to update it manually. This would require root access.

Here's a manual update guide, in case you decide not to wait for an OTA update, which may never come.

Edit #1: If India already has it, and your phone cannot detect it, try this: Go to `Settings > Apps > ALL". Look for Google Services Framework, and click Force Stop button and Clear data button.

  • Any official source. Look at the link gsmarena.com/newscomm-5074.php. Many people in India have got 4.2 updates
    – jsist
    Feb 25 '13 at 5:41
  • @shubhansh: See my Edit #1
    – geffchang
    Feb 25 '13 at 6:37
  • tried, but still not able to get update... :(
    – jsist
    Feb 25 '13 at 7:42
  • @shubhansh How about about if you Force Stop, Clear, RESTART, Check update?
    – geffchang
    Feb 25 '13 at 7:55
  • @shubhansh Try to do it 2-3 times also. It might work.
    – geffchang
    Feb 25 '13 at 7:56

OTA updates are country specific. In India 4.2 is not officially available for I9250. You can wait for official OTA or install manually as @geffchang suggested.


Try adb sideload from this tutorial. Then use sideload again to update from 4.2 to 4.2.2 (it is much faster). You don't need root or flash bootloader.


Official OTA updates 4.2.1 are started for I9250 in India. I received it on 20-Mar-2013. Check for updates from your system settings.


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