The global version of the Nexus 7 has received an Android 4.1 (Jelly Bean) patch but with a Software Development Kit (SDK) port. The JRN83C ROM was described as being relatively stable and several, though not all, features were reported to be working properly.

The custom ROM port has now come to the Nexus 7, thanks to XDA developer Legolas9, via a CyanogenMod 10 (CM10) ROM based on the Android 4.1.1 software; this port is for Nexus S build number I9020. The ROM - Chocolate River - is to provide users with a stock Jelly Bean experience. This ROM comes with Jelly Bean Kernel v6 and the only feature reportedly not working is wi-fi; the developer claims to be working on a solution.

Users looking to install this ROM may follow the steps below. IBTimes UK recommends that users check the model number of their device before proceeding: this ROM works only with model number I9020. We also recommend making a back-up of all important data and ensuring there is at least a 75 percent charge left in the device.

Galaxy Nexus S
Android 4.1.1 based on CM10 ported to Galaxy Nexus S. XDA Developers

To Install Android 4.1.1 with CM10 for Galaxy Nexus i9020

  • Install ClockWorkMod (CWM) Recovery.
  • Download the following files:
  • Copy downloaded files to device's SD card.
  • Turn off device and boot into CWM recovery (simultaneously press Volume Down and Power buttons to boot into Fastboot. Highlight Recovery option and select using Power).
  • Back-up present ROM. To do this, navigate to Back-up and Restore and click on Back-up. Return to main Recovery menu upon completion of back-up.
  • Select Wipe Data > Factory Reset to confirm data wipe.
  • Navigate to SD card. Select for installation in following order
    • Jelly Bean CM10 Build 6
    • Root Package
    • Google Apps Package
    • GPS Fix Package
  • After process is over, select Go Back and then reboot device. It should now boot into the CM10 ROM

Congratulations… the Samsung Nexus S I9020 is now running Android 4.1.1 software, based on CM10.