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Update Google Nexus 4 to Official Android 4.4.3 KitKat KTU84L

Google has released the official Android 4.4.3 KitKat firmware version KTU84L OTA Update for the Nexus 4 smartphone. Use this guide if the update files haven’t arrived in your region and if you want to use a manual method of updating Nexus 4.

This guide should be applied by advanced Android users. Note that this guide can be used only if you’re running stock Android 4.4.2 KitKat KOT49H firmware. Do not try to update your phone if it runs on a custom ROM.

This new update comes with tons of bug fixes and tweaks that should make your device run better than it did before. The new update also brings better battery life for your Nexus.

Check more info about this release here.

Before starting the updating process you should take a look at the preparation guide below:

  • use this tutorial only with the Google Nexus 4 smartphone.
    – do not try to install the files you find in this post on any other Android device.
  • your phone should be running on the Android 4.4.2 KitKat KOT49H firmware.
    – do not install the KTU84L Kitkat 4.4.3 on a an older than KOT49H KitKat 4.4.2 firmware, as it won’t work.
    – check your phone’s installed firmware version under Settings> About Device > Build Number.
    – continue with the installation process only if the Build Number is KOT49H.
  • unlocked bootloader is not required, as the update can be flashed even if you have a locked bootloader.
  • the guide works with both rooted / non-rooted devices.
  • in this guide you can find two different tutorials: one is destined for Nexus 4 with Stock Recovery while the second tutorial works with custom Recoveries with TWRP or CWM.
  • if your Nexus 4 is running a custom ROM, then this tutorial will not work with it, you will have to restore to stock Android 4.4.2 KOT49H firmware.
  • make sure that you have the Android SDK installed and configured on your computer.
    – download it from here and install it on the C: partition of your PC.
    – also, after you unzip the Android SDK bundle you should make sure to launch the SDK Manager.
    – after you configure it you should remember where the ‘platform-tools’ folder is listed, as that is where you will have to place the Android 4.4.3 update zip file.
  • if your Nexus 4 is not detected, then you can choose to re-install the Google USB Drivers using this guide here.
  • enable USB Debugging from Developer Options.
  • this tutorial has to be used by advanced Android users, do not attempt to update the Nexus 4 if you’re a beginner.
  • make sure that your phone’s battery charge level is over 50%, this will prevent it from switching off while you’re flashing the new firmware update.
  • you cannot blame us in case you brick the phone nor in case you lose any data in the process.
  • get to the next tutorial only when you’ve made sure that the Nexus 4 is correctly configured for the update.
  • read the entire post and don’t skip any steps.

Now that you know all of the above you can continue to the next part of this article.

Flash Android 4.4.3 KitKat KTU84L on Nexus 4 using Stock Recovery:

  1. Download the file from here.
    – save the firmware zip file on your computer.
  2. Change the long name of the zip into ‘update.zip’ and then move it into ‘platform-tools’ folder of the Android SDK directory.
    – in the guidelines above you have the link for Android SDK.
  3. Power off the Google Nexus 4 now.
  4. Next you have to boot in Recovery Mode.
  5. When the Recovery Mode menu appears you should select the ‘apply update from adb’ option.
  6. Connect the Nexus 4 with your PC via USB Cable.
  7. Go to the folder where you’ve placed the Update.zip file in step 2.
  8. Now you need to press and hold ‘Shift’ while at the same time you have to right-click on the folder’s white space. Select ‘open command prompt window here’.
  9. For the Android 4.4.3 KitKat KTU84L installation to begin you should enter the following command line in the Command Prompt window: adb sideload update.zip
    if you didn’t change name of the firmware zip then you will have to enter it exactly like it is named.
  10. Wait until the sideload progress reaches 100% and don’t press any buttons until the process is complete.
  11. When the installation is finished you should reboot the phone in normal mode and unplug it from your PC.

These were all the steps that you had to take in order to complete the updating process of your Nexus 4 to Android 4.4.3 with Stock Recovery.

Install Android 4.4.3 KTU84L for Nexus 4 from Custom Recovery:

This guide is destined for devices that are having a custom Recovery like CWM or TWRP.

  1. Download the firmware update zip file from the first step of the tutorial above.
  2. Connect your Nexus 4 to computer and move the Android 4.4.3 zip to its internal storage.
  3. After the file is copied you can disconnect the phone from PC.
  4. Now you should boot the phone in Recovery Mode.
  5. Choose the ‘install zip from sdcard’ option from Recovery Mode.
  6. Find the KitKat 4.4.3 zip file and confirm its installation.
  7. Wait for the update to complete and then reboot your phone in normal mode.

I hope that you’ve managed to complete the updating process.

If you need more help use the comments field and ask for extra help.

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