How to Install Android 4.2.1 JOP40D Official OTA Update on Galaxy Nexus I9250 [For ROOTED]
We have put together a detailed step-by-step instructions guide on how to install Android 4.2.1 Jelly Bean official software update (JOP40D) on Galaxy Nexus I9250. If you are used to installing custom ROMs on your Galaxy Nexus, then this should not be any different for you.
However, for beginners, you need to root your Galaxy Nexus and install a custom recovery. Please read the tutorial once before you actually perform it.
Disclaimer: Try this on your own risk. I’m not responsible if you mess up with your Galaxy Nexus.
Just To Remember:
- This ROM is only for Galaxy Nexus I9250 and I am not sure if it will work on the other variants of the Galaxy Nexus or other devices.
- Make sure you have ClockworkMod custom recovery installed on your Galaxy Nexus. Your phone is not rooted? Go back to page 1 for the tutorial.
- Do not proceed if you don’t have Android 4.2 JOP40C already installed.
- Make a Nandroid backup of your previous tablet set up before proceeding.
Complete Step-By-Step Instructions:
Step 1 – Download Android 4.2.1 JOP40D OTA Update for Galaxy Nexus on your PC, if you haven’t already.
Step 2 – Connect and mount your Galaxy Nexus USB memory on your computer using the USB cable.
Step 3 – Now copy/paste the Android 4.2.1 zip file to your SD card. Make sure the file is in the SD card root.
Step 4 – Then turn OFF your phone.
Step 5 – Now to get in the Bootloader Mode. Turn ON the phone while pressing and holding the Volume Up + Volume Down + Power buttons till you see the Fastboot menu and START on top.
Step 6 – Follow the navigation instructions on the screen. Press Volume Up button several times till you see RECOVERY and press Power button to select it.
Step 7 – In ClockworkMod recovery, scroll down to “flash zip from SD card” and press the Power button to select it.
Step 8 – Press the Power button again and select “choose zip from sdcard”.
NOTE (Optional): You might have to turn OFF signature verification from the “toggle signature verification” option.
Step 9 –Now using your volume keys, navigate to Android 4.2.1 zip and select it using the Power button. Confirm the installation on the next screen and the installation procedure should start now.
Step 10 – After the installation completes, go to “+++++Go Back” and reboot the phone by selecting “reboot system now” from the Recovery Menu. The phone will boot now and it might take about 5 minutes to boot on your first time. So, please wait.
That’s it! Your Galaxy Nexus should now have the official Android 4.2.1 JOP40D Jelly Bean software update installed on your phone! Go to Settings >About phone to verify.
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UPDATE: You can now also root Galaxy Nexus I9250 on Android 4.2.1 JOP40D Firmware. Read the complete tutorial here!
Have fun playing with it! If you have any issues, please fire them up in the comments below!