How to install Android 4.2.1 Jelly Bean CM10.1 Nightly custom ROM on Galaxy Nexus I9250

How to install Android 4.2.1 Jelly Bean CM10.1 Nightly custom ROM on Galaxy Nexus I9250... Now user can install Android 4.2.1 Jelly Bean CM10.1 Nightly custom ROM on Galaxy Nexus I9250.

 Here is the complete tutorial how you can it. Before going to forward, do not forget to backup all your personal data and apps.

Installed all your USB DRIVERS FOR Galaxy Nexus I9250 through PC. Some things you should keep in mind.

1. Enable the Debugging Mode. By enable the debugging mode you can connect own android phone with PC.

2. You should check your battery. Your batter should be 80% to 85% charges. If your phone will be off during flashing ROMs or installing mods and updates due to low battery. Then your Phone will be dead permanently.

3. As, i told you. You should back up all your date. You will need it for new ROM.

4. Your Phone should be Unlocked.

Now we move forward and important part.

Here is the complete detail in different steps.

Read the all steps carefully.

Step 1
Download Android 4.2.1 CM10.1 ROM and Google Apps 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 ROM zip and Google Apps zip files to your SD card. Make sure the files are 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 and Power buttons.

Step 6
Follow the navigation instructions on the screen. Select BOOTLOADER and then go to RECOVERY.

Step 7
In ClockworkMod recovery, wipe data first. Then 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”.

Step 9
Now using your volume keys, navigate to Android 4.2.1 ROM zip and select it using the Power button. Confirm the installation on the next screen and the installation procedure should start now.

NOTE: Repeat this step for the Google Apps zip file as well.

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 have Android 4.2.1 Jelly Bean firmware installed on your phone! Go to Settings >About phone to verify.

Now Android 4.2.1 Jelly Bean CM10.1 Nightly installed custom ROM on Galaxy Nexus I9250.