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Install Android 4.2.2 CM 10.1 M2 ROM for the Google Nexus S

The Google Nexus S can now be upgraded to Android 4.2.2 Jelly Bean using the CyanogenMod 10.1 M2 ROM. Use the tutorial and you’ll learn how to flash the new custom ROM easily in only 5 minutes.

In order to make sure that you successfully flash this CM10.1 M2 build ROM on your Nexus S then you should read the guidelines listed below:

  • use the tutorial only for the Google Nexus S smartphone. Do not attempt to flash this ROM on any other Android device or tablet.
  • Your phone has to be rooted and running a CWM or TWRP Recovery.
  • In the tutorial you will find a step that asks you to wipe data and factory reset the device. NOTE: if you are already running on a CM 10.1 Nightly build then you can skip the factory reset device.
  • It is recommended for you to create a NANDROID backup of the current ROM. It sets a restore point for your device and you will be able to use it in case the phone doesn’t boot with the new ROM.
  • Create backups of your SMS, Call logs and other similar data using the following applications: SMS backup & restore | Call Logs backup & restore | APN Settings Backup & Restore | AppBack for Android applications. Root access will be required for these apps.
  • Sync all your Contacts data with your Gmail account using the guide here.
  • Make sure that there is enough power left in your battery before starting the updating process.
  • This is a guide for advanced Android users and you shouldn’t blame us in case something goes wrong and brick the device or you brick the phone. Read the entire tutorial and make sure that you don’t skip any steps that I’ve listed.

How to install CM 10.1 M2 Jelly Bean 4.2.2 for the Google Nexus S:

  1. Download the CyanogenMod 10.1 M2 from HERE.
  2. Download the Gapps for Android 4.2.2 from HERE. Don’t download a different version.
  3. Connect the PC to Nexus S and move these files to the phone’s internal SDcard. Don’t unzip the files. Disconnect the phone from PC when the files are copied successfully.
  4. Power off the Nexus S.
  5. Boot it into CWM Recovery mode by pressing at the same time Volume Down and Power buttons.
  6. Create a NANDROID backup of your current ROM using the ‘backup and restore’ option. This will set a restore point for your device.
  7. Select ‘wipe data/ factory reset’ option and Confirm. If you already have a CM 10.1 Nightly ROM installed on your phone, then you can skip this step.
  8. Select ‘install zip from sdcard’ and then select ‘choose zip from sdcard’. Find the CM 10.1 M2 JB ROM and install it.
  9. Select ‘choose zip from sdcard’ again and then flash the Gapps zip. Confirm.
  10. Return to the main menu of the Recovery Mode. Select ‘reboot system now’.
  11. Enter your Google Account details when the first boot process is complete.

If the first boot process doesn’t complete or the device enters a boot loop, then you will have to power off the device completely. After that you have to repeat the entire tutorial once again and make sure that the second time you apply the actions listed under step 7.

If you cannot complete the tutorial then you should ask for more help in comments and we will try to offer you a viable solution.

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