Galaxy Nexus international versions can now update to Android 4.2.2, which is already available for download. This new version promises improved quick settings controls, new sounds and the download notification now shows how much time or percentage is remaining for you to finish downloading applications. However, before updating, ensure that your unit is the right version or you'll risk your smartphone getting bricked.
The zip file is already downloadable for anyone who wants to flash to Android 4.2.2. To update, got to recovery mode, indicated by a red exclamation point. Then, press Volume up and Power button simultaneously and a new menu will be on display and update. Connect your Galaxy Nexus international version to your PC and load the Android 4.2.2 update zip file via command prompt. You will be asked to type a code or syntax and wait until it gets updated to 100% and reboot. Remember, always ensure that you are flashing the right Galaxy Nexus device or you'll kill it.
Thanks to Droid-Life