Sprint variant of the Galaxy Nexus has received its own version of the CM 10.1 M2 ROM. It is based on the Android 4.2.2 Jelly Bean and if you carefully follow all the info listed here you will be able to flash the ROM without problems in under 5 minutes. Make sure to read the entire post and ask for extra help in comments if you cannot complete the installation at your first attempt.
The CM10.1 M2 build is a more stable release than the CM 10.1 Nigtlies and it should bring the latest Android 4.2.2 JB features for your Sprint GNex phone. In order to make sure that you successfully flash this update, read the guidelines listed below:
- The files you will need to use will work only with the Sprint variant of the Samsung Galaxy Nexus. Do not attempt to use any other smartphone with this tutorial.
- The Galaxy Nexus you’re about to update has to be on unlocked bootloader, rooted and running a custom Recovery image like the CWM or TWRP. If yours doesn’t then you should first apply all those changes and then return to this post.
- Use the custom Recovery mode to create a full NANDROID backup of the currently installed ROM. It will create a restore point for your phone and you can use it in case something goes wrong and the phone doesn’t boot with this new ROM.
- In the ‘how-to’ guide you will find a step that asks you to wipe the data from your /system partition. This will delete the installed apps and SMS, Call Logs and other similar data. Use the following apps to backup data: SMS backup & restore | Call Logs backup & restore | APN Settings Backup & Restore | AppBack for Android application. Root access needs to be granted for some of these apps. NOTE: if your phone is already sporting a CM10.1 Nightly build ROM then you can skip the data backup as you won’t be forced to apply the ‘factory reset’ step.
- Sync the Contacts data with the Gmail account that you’ve assigned for your device.
- Don’t blame us in case you brick the phone or you lose data in the process. This is a guide for advanced Android users.
- Make sure that your phone’s battery power charge level is over 50% so that the device won’t switch off in the middle of the updating process.
- Read the entire post and make sure that you don’t skip any steps that I have listed below.
These were all the guidelines that you had to go over before continuing to the next part of this article.
How to install CM10.1 M2 Build ROM for the Sprint Galaxy Nexus:
- Download the ROM zip file from HERE.
- Download Gapps for Android 4.2.2 based ROMs from HERE.
- Connect your smartphone to your computer and then move the downloaded files. Copy them to your phone’s internal SDcard and, after the transfer is complete you should disconnect the device from PC. Don’t unzip the files.
- Power off the Sprint GNex.
- Boot your phone to Fastboot mode by pressing Volume Up, Volume Down and Power. When the screen powers on you need to release the buttons and then select RECOVERY option. Boot into TWRP Recovery mode. We’ve used TWRP recovery but you can use CWM also as the instructions are very similar.
- Select ‘backup’ and then select the system, data, boot option and create the backup. After the backup is complete you should return to the main menu of the TWRP Recovery mode.
- Select ‘wipe’ and then ‘Factory Reset’ and confirm this process. NOTE: if you already have a CM 10.1 ROM installed on your phone, then you should skip this step.
- Select ‘install’ option and then find the CM10.1 M2 zip and confirm its installation.
- Select again ‘install’ and then find the ‘gapps’ zip. Confirm the install.
- After both files have been successfully installed you should return to the main menu of the custom Recovery mode.
- Select ‘Reboot’ and then ‘System’. Wait until the device powers on and then begin testing the new ROM.
These were the steps that you had to take. After the installation is complete and the first boot process takes too long to complete or the device gets into a boot loop then you will have to repeat this entire process once again. Power off the phone completely, boot again into custom Recovery mode and then repeat the entire tutorial and, make sure to apply step 7 as that might be why the new OS didn’t install.
If you have any other questions please post them in our comments field.