How to install unoffcial Stock Android 4.2 ROM on Verizon Galaxy Nexus

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Android Jellybean version 4.1 has been rolled out on specific devices from Samsung. But this time Galaxy Nexus both in the US and to the international variants in other markets would taste the latest unreleased unofficial Jellybean version 4.2 in pure AOSP flavor.

All thanks goes to XDA member Grouper, they have released an Android version 4.2 ROM on Nexus. This is a pure Android 4.2 stock ROM without any modifications except root, and with the necessary Verizon files to make it work properly on the device. This is the first device getting unofficial Jellybean version 4.2 Rom, working properly on the device.

Some issues exist in the ROM for now, though both are pretty minor and are listed below:

  • Can’t restore apps/saved WiFi passwords from Google account on initial boot
  • Carrier sometimes displays as T-CDMA 64 instead of Verizon Wireless

Pre-requisites:

At SamsungMobileClub we make sure that our readers take all precaution and preventive [prevent data loss and soft Bricks] measures before installing Custom ROM, Root or flashing firmware.

For trying this rom you have to unlock your Bootloader, unlock Bootloader may void your warranty period. But don’t worry! You can regain back your warranty by applying original stock firmware again. This firmware is only for Verizon Galaxy Nexus not for any other galaxy nexus model. If you still try on other models there will be undesired outcomes, it is not Samsungmobileclub responsibility neither developer. We are providing information for guide purpose only, so no guarantee for any damage.

We have explained all required steps in detail:

Step 1: To ensure that you do not lose anything, please create backup of SMS, Contacts, APN settings, Whatapp chat messages etc. [Alternative link to backup SMS, MMS, Contacts, Calendar, events on Samsung Android Phones]

Step 2: Please ensure that you have a desired battery level to perform the procedure [we suggest minimum 60%]. While Installing custom ROM or rooting your device it is required to enable USB debugging. You will find USB debug enable options in Settings>>Developer option. If you still do not get it, check out our detailed tutorial about Enabling USB debugging and checking batter status /Usages.

Step 3: If you have already rooted your device and install CWM recovery and going to install a ROM then please backup your Firmware ROM using CWM recovery.

Step 4: We suggest a full backup of your apps and cache data, if you are rooted use Titanium Backup [App backup and Restore tutorial] or you can follow this tutorial to backup without root access.

Step 5: Please disable Antivirus, Firewall or other security apps before flashing Root, Firmware or Custom ROM as them may interrupt the procedure. We also suggest disabling Samsung Kies if you are flashing through PC.

Step 6:  Please insure that you have correct driver and ADB installed on your System.

If you face any issues you can restore ROM using CWM recovery. After installing Backup you can restore all apps, SMS, Contacts and settings using the Tutorial provided on above mentioned links.

Download Section:

How to install Pure Android 4.2 ROM on Verizon Galaxy Nexus:

Step 1: Connect your Verizon Galaxy Nexus to PC with the help of original USB cable.  

Step 2: Copy the Downloaded file *.zip (Jellybean 4.2 Rom package + Gapps package) in the root of your phone internal memory.

Step 3: Now, switch off and restart your phone but this time boot in Recovery Mode. Recovery mode is a place where you can boot firmware with storage device.

Note: Recovery Mode in Verizon Galaxy Nexus can be entered by Pressing Power + Volume up + Volume Down to enter Fastboot mode where you will see “Start” written in green letters. Then, using the volume buttons navigates to the Recovery mode option and then selects it using the Power button to reboot into recovery mode.

Step 4: In recovery mode, select “Wipe data/factory reset” & “Wipe Cache partition”. It will clear all the cache memory so that no error occurs during the firmware update procedure.

Step 5: Now, on recovery mode select “install zip from sd card” > “choose zip from internal sd card” and then choose the Android 4.2 ROM firmware Package which you have placed in Root directory of phone. Confirm by pressing yes.

Step 6: After Firmware installation is complete, go back to the main recovery menu, select advanced, then select Fix permissions.

Step 7: repeat same procedure in step 5 but this time selects Slim-GApps-4.2.0-JOP40C-MRH3LLMAN.zip. This will install Google Apps package.

Step 8: It will take around 5 minutes for applying the update. Also, note that it may take longer time than the normal time for the first reboot.

Note: As this is the not official Firmware and has limited Functionality but being on the safe side to make sure you know that after installing this firmware update, you can get FC errors, boot loops, several other bugs, apps might not work or worse, your phone might not boot. To fix, you will have to reinstall stock firmware.

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