Finally after Nexus 7, Nexus 10 and Galaxy Nexus, Nexus 4 joins the Android 4.2.2 update with the Nexus family. You can read the few changelogs of Android 4.2.2 here, if you want the update in your device whether it is rooted or unrooted and you can go to settings and check for the updates. If that doesn’t works for you then you can do manual updates follow the below steps for it,
How to flash an official Nexus update with ADB sideload:
- First you’ll need to have the Android SDK installed and working.
- Download Android 4.2.2 OTA for the Nexus 4 from Google’s servers.
- Go to Developer options on your Nexus device. Enable USB Debugging.
- Plug your Nexus device into your computer with your USB cable.
- Open a command prompt (cmd) or terminal and make sure ADB is working with ‘adb devices’.
- Once ADB is connected and working, type ‘adb reboot recovery’
- Press Volume Up and Power at the same time to enter the stock recovery menu.
- Select Apply update from ADB on your Nexus device.
- Type ‘adb sideload filename.zip’ into the command prompt or terminal on your computer.
- Wait for a while till the system get updates installed.
- If everything worked as intended, you should then be prompted to reboot your device,
- Press Volume Up and Down keys to select Reboot System and proceed by hitting the Power button.
- Reboot your device
- Congratulation you have successfully updated your device to Android 4.2.2