Root Galaxy Nexus on Android 4.1.1 JRO03C Official Firmware

• Last modified: Android Tips

Google released the official Android 4.1.1 software update for its Nexus devices today. the latest build JRO03C offers much more stability, bug fixes and better Android experience than the previous stock version of Jelly Bean.

In this tutorial, we will tell you how to root Galaxy Nexus I9250 on Android 4.1.1 JRO03C OTA with complete steps on how to flash custom recovery on your phone. We will use ClockworkMod recovery as our custom recovery and Superuser as our rooting package.

Disclaimer: All the tools, mods or ROMs mentioned below belong to their respective owners/developers. We (TeamAndroid.com) or the developers are not to be held responsible if you damage or brick your device. We don’t have you on gun point to try out this tutorial ;-)

Make sure you have installed all your USB drivers for the Samsung Galaxy Nexus to connect it with the computer. Download Samsung Galaxy Nexus USB drivers! Apart from just the USB drivers, there are a few more things that you need to take care of.

1. You need to enable USB debugging mode. This helps to connect your Android phone with the PC. See here: How to Enable USB Debugging.

2. Your phone battery should be 80-85% charged. If your phone goes off suddenly because of battery, during flashing ROMs or installing mods and updates — your phone might go dead permanently. See here: How to Check Battery Percentage.

3. Backup all your important data that you might need as soon as your flash a new ROM, or make a backup for just in case, you never know when anything might go wrong. See below on how to backup data:

4. Your phone should be factory unlocked. Additional instructions for locked Android devices will be added in the tutorial for unlocking devices.

Now, let’s proceed with the tutorial on the next page and update your phone to the latest Android 4.1 custom ROM update.


  • AS123

    In step 11,when i enter the command it says

    ‘fastboot’ is not recognised as an internal or external command,operable program or batch file.

    What do I do ?

    • http://www.harisnadeem.com Haris Nadeem

      Did you perform this: “Step 3 – Download Fastboot and extract it in android-sdk-windows\platform-tools directory. Create directory if not already there.”?

  • http://profiles.google.com/cyriac.kandoth Cyriac

    Volume Down + Power button combo takes me to Odin mode. Volume Up + Volume Down + Power button combo takes me to Fastboot.

    ~Cyriac

  • http://1box.fr Mickey

    Just a detail :

    Press Volume Down + Volume Up + Power keys for a few seconds till you see some text on the screen… :)

    Thanks for this article.

  • lolobabes

    i do have 64bit windows should I use the fastboot-win64? can I use this then http://rootzwiki.com/topic/4551-guide-making-fastboot-work-on-64-bit-windows-7-systems/ ty

  • James

    After step 11 i get “The program cant startbecause AdbWinApi.dll is missing from your computer. try reinstlling the program to fix this problem
    PLEASE Help me

  • SebasMM

    hi i have a question! with this method of rooting am i going to lose all my data? i mean, my phone will get factory reset? because i read on other sites the methods their use, and it says you have to unlock your bootloader in order to root the phone..so in this post it didn’t says anything of unlocking the bootloader..so, what i’m trying to say is that i want a method of rooting my Nexus, without unlocking the bootloader, and off course dont getting the phone factory reset,,i want to root my phone, install recovery and thats it, leaving my phone exactly the same as i got it now without the root, sorry for the long question, i hope you can answer me quickly and that you understand everything i just say XD