Use this tutorial if you wish to learn how to successfully flash the newest Android 5.0.1 LRX22C firmware update manually on your Nexus 4. This is a guide that you can use in case the new Android 5.0.1 OTA Update hasn't been rolled out in your region.

Remember that the Nexus devices can be updated manually with official OTA firmware zip files only in case they are running the previous Android build. So, for this guide to work your Nexus 4 device has to run the Android 5.0 Lollipop build LRX21T.

Android 5.0.1 LRX22C brings bug fixes and stability improvements, new things that should make your smartphone run faster and better than it did with the previous 5.0 LRX21T build. After I've updated my device I've noticed a small battery life improvement and a much more stable Lollipop OS environment. Feel free to leave a comment at the end of this after you've tested the new firmware on your N4, too.

Before starting the updating process you will need to read the guidelines below:

  • use this post only with the Google Nexus 4 that runs on stock Android 5.0 LRX21T firmware.
    - do not attempt to update any other phones with the files that you will find in this post.
  • if your Nexus 4 device runs the latest Android 4.4.4 KitKat build, then you will need to upgrade it first to Android 5.0 LRX21T firmware before installing the LRX22C Android 5.0.1 build.
    - the firmware version of your device can be checked under Settings> About Phone> Build Number.
  • this is a guide that will work for both unlocked and locked Nexus 4 bootloaders.
  • enable USB Debugging from Developer Options menu.
    - if the Developer Options menu doesn't show up in Settings, then you need to open 'About Phone' section and enable it by tapping on the 'Build Number' text 7 times.
    - go back to Settings, open Developer Options and enable USB Debugging.
  • this is a guide that has to be used by advanced Android users.
    - you can't blame us in case you end up bricking the phone, nor in case you lose any important data files.
  • check your phone's battery charge level and make sure that it is over 50%, it will prevent the device from powering down during install.

How to update Nexus 4 to Android 5.0.1 LRX22C Lollipop from Android 5.0 LRX21T:

If you haven't configure the Android SDK Manager, then you should use the info below. Without this you won't be able to sideload any new Lollipop firmware files to your Nexus 4.

Here's how to setup the Android SDK for your computer:

  • download the Android SDK tool from here.
  • create a folder named SDK in C:/ partition and extract the Android SDK files in it.
  • find and launch SDK Manager executable.
  • install all the packages required by the SDK Manager and then continue with the rest of the process.
  • download the Nexus 4 USB Drivers, unzip and then install them on your PC.

Now that everything is configured you should continue to the Android 5.0.1 update tutorial below:

  1. Download the "Android 5.0.1 LRX22C firmware update from Android 5.0 LRX21T" zip file here.
  2. Rename the Firmware zip file to "update.zip". This is done for easier access.
  3. After the file has been renamed you should move it in the "platform-tools" folder. It should be under the SDK directory you've created before getting to the tutorial.
  4. Power off the Nexus 4 now.
  5. Next, boot the device in Recovery Mode.
  6. When Recovery Mode is loaded you should select 'apply update from adb'.
  7. Connect the smartphone to your PC via USB Cable.
  8. Open the 'platform-tools' folder. Open a command prompt window.
    - it can be done by holding SHIFT key and then right-clicking on the folder's white space.
    - select 'open command window here' from the right-click context menu.
  9. Now you need to confirm that the phone has been detected by your PC:
    - enter adb devices command line in the Windows CMD window.
    - if there are no devices listed, then you will have to re-install the Samsung USB Drivers.
  10. In order to flash Android 5.0.1 LRX22C OTA update file you will need to enter adb sideload update.zip
  11. Confirm the installation process. When the update is complete you will be notified on the phone.
  12. Select 'reboot system now' option and unplug the device from PC when the installation is complete.
    - note that the first boot process of this new ROM will take somewhere around a half hour before it loads all the new files.
  13. Use your usual login details in order to take control over the Android 5.0.1 Lollipop firmware.

These were all the steps that you had to take in order to learn how to update your Nexus 4 with a brand new Lollipop firmware. For more help use the comments field below.

corner-left-up dots-three-vertical