Update Verizon Samsung Galaxy S3 to Android 4.2.2 Jelly Bean using CM 10.1 RC1 ROM
Verizon variant of the Samsung Galaxy S3 can now be updated with CyanogenMod 10.1.0 Release Candidate 1 build using the instructions that I have listed in this tutorial. Read all the info posted below and you should be able to complete the installation process easily without bricking your smartphone.
CM 10.1.0 RC1 is the next installment by CyanogenMod team and it is a much more stable snapshot than the Nightlies ones and you can flash all the files successfully only if you first take a look at the preparation info below. You will learn what steps to take so that you can flash the new OS and backup some of your most important data before starting the update.
- This is not an official Verizon Jelly Bean update file, but a custom ROM designed by CyanongenMod team and based on AOSP Android 4.2.2 Jelly Bean.
- don’t try to flash this CM 10.1 RC1 build on other Android devices, as it works only with the Verizon Samsung Galaxy S3 smartphone.
- the VZW Galaxy S3 that you’re about to update should be on unlocked bootloader, rooted and running a custom Recovery image like the CWM or TWRP ones. We have used the CWM Recovery for this guide but you can use TWRP also, as the instructions are similar.
- create a NANDROID backup of your current ROM before starting the installation of CM 10.1 Release Candidate 1. If you don’t know how to do it, then you will find the instructions in the tutorial.
- the how-to guide will ask you to factory reset your phone before installing this new ROM. That’s why you will lose the contents from the system partition, things such as installed apps, call logs info, sms and other similar data. If you want to backup some of these data files, use the following tools for Android: SMS backup & restore | Call Logs backup & restore | APN Settings Backup & Restore. Root access will be required for some of these apps.
- The contents of the internal and / or external sdcard will not be deleted in the process.
- remember to sync the Contacts data with your Gmail account. That guide will teach how to successfully backup your saved phone numbers and other Contacts data by syncing it with the default Google account you’ve assigned for your smartphone.
- Enable USB Debugging from the Developer Options menu.
- make sure that your phone has enough power left in its battery before switching off.
- this guide is for advanced users.
- don’t blame us in case you brick the phone or you lose any important data in the process.
- don’t skip any steps listed in the tutorial.
- if you cannot complete the update, then you can ask for extra help in comments.
These were all the steps that you had to go over before continuing to the next part of this post.
NOTE: If your Galaxy S3 is already running on a previous build of CM 10.1 Nightlies or M snapshot, then you can skip the Factory Reset step and ‘dirty flash’ the new RC1 build over it. However, if your phone doesn’t boot into normal mode with the CM 10.1.0 RC1 ROM, then you will be forced to reboot into Recovery mode and repeat the entire tutorial. You’ll find all the info in the how-to part.
How to install CM 10.1 RC1 Jelly Bean 4.2.2 ROM for the Verizon Samsung Galaxy S3:
- Download the CyanogenMOD 10.1.0 RC1 build from HERE. Don’t unzip, save the file on your PC or directly to your phone’s internal sdcard.
- Download Gapps for Android 4.2.2 ROMs from HERE. Don’t unzip the file, save it on your computer or to your phone just like you did with the ROM zip.
- If you downloaded the files on your PC then you should connect the device to your PC. Move both files onto its internal Sdcard file and then disconnect the phone from PC.
- Power off the smartphone now.
- Boot your Galaxy S3 Verizon into CWM Recovery mode by pressing and holding Volume Up, Home and Power. Release the buttons when the screen powers ON and confirm that you wish to load CWM Recovery by pressing Volume Up.
- Select ‘backup and restore’ option now and create a full NANDROID backup of your current ROM. This step will create a restore point for your device and you can use it in case the new OS doesn’t boot into normal mode.
- Select ‘wipe data/ factory reset’ option from the main Recovery menu. Confirm this process. This step will remove all the installed apps and other similar data from the system partition.
>NOTE: in case your phone is already sporting a previous build of CM 10.1, then you can skip this step and flash the new OS over this one. Installing a new ROM over the current version is known as a dirty flash. If the phone doesn’t boot after installing the new OS, then you will be forced to reboot into Recovery and factory reset the phone.
- Now, select ‘install zip from sdcard’ option from the main custom Recovery menu. After that you should select ‘choose zip from sdcard’ and find the CM 10.1.0 RC1 zip. Confirm its installation.
- When the ROM is installed, select once again ‘choose zip from sdcard’. Now, install the Gapps zip.
- After both files have been installed with success, return to the first screen of CWM Recovery and select ‘reboot system now’.
- Wait for the first boot process of this new OS to complete. This shouldn’t take more than 5 minutes to complete.
- Enter your Google Account details when the CyanogenMod 10.1.0 RC1 home screen appears.
- Test all the new functions of this new OS and decide for yourself if you wish to continue using it as the default ROM.
These were all the steps that you had to go over in order to flash the CM 10.1 Release Candidate 1 for the Samsung Galaxy S3 Verizon model.
In case you don’t like how the new ROM works with your device, then you can easily use the CWM Recovery mode and restore the NANDROID backup of your previous OS. If you have any other questions, then you should leave them posted in the comments field below.
Remember to restore all the data you backed up before installing the CM 10.1 RC1 ROM.