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Update Google Nexus 7 3G (2012 Edition) using Android 4.4.3 KitKat KTU84L Official Firmware

Use this tutorial if you’re planning on installing the official Android 4.4.3 KitKat KTU84L firmware on your Nexus 7 3G 2012 model.

Also, this guide is great for Nexus 7 users that haven’t been notified by their tablet that there is a brand new Android firmware available for installation. If you want to learn more about this release, then you can check this post.

Before starting the update you should take a look at our preparation info below:

  • use this post only with the Google Nexus 7 3G 2012 Edition.
    – this device is codenamed “nakasig”.
    – do not attempt to update any other Android tablets or phones with the files that you will find in this article.
  • note that your Nexus 7 has to be on Android 4.4.2 KitKat KOT49H.
    – don’t flash the latest KTU84L on older firmware versions than KOT49H.
    – check the firmware version of your tablet under Settings> About device> Build Number.
  • this guide works with both non-rooted and rooted Nexus 7 3G models.
    – also, your device doesn’t have to be on an unlocked bootloader either.
  • this post contains two tutorial for you to use: one that is destined for Nexus 7 tablets running Stock Recovery and another one that works with Custom Recoveries.
  • if your tablet has a custom ROM installed on it, then you will not be able to update it.
  • make sure that you will install and configure the Android SDK ADT Bundle on your computer before starting the update.
    – download SDK from here.
    – after the download is complete you should extract the contents of the archive file to your computer’s C: partition.
    – launch the SDK Manager in order to update and install the necessary drivers for your Nexus 7 3G 2012 model.
    – note that the updating file you will download has to be placed under “SDK> platform-tools” directory.
  • make sure to enable the USB Debugging from Developer Options.
  • note that this post has to be applied by advanced Android users only.
  • do not blame us if you brick the tablet nor in case you lose any data file.
  • check the battery charge level of your tablet and make sure that it is over 40%, this will prevent it from switching off in the middle of the installation.
  • read the entire article first and only after you fully understand the steps that you have to take you should continue to the tutorial guides.

Make sure that you don’t skip any steps listed below.

Flash Android 4.4.3 KitKat for Nexus 7 3G 2012 with Stock Recovery:

  1. Download the update firmware zip from here.
  2. Save the file on your PC and place it in the ‘platform-tools’ of SDK directory.
    – you can change the name of this file to ‘update.zip’ -> that will make it easier to enter its name in command prompt.
  3. Power off the Nexus 7 completely.
  4. After that you should boot Recovery Mode.
  5. Select the ‘apply update from adb’.
  6. Use the USB Cable and connect your Nexus 7 tablet to your computer.
  7. Go to the folder where you’ve placed the Android 4.4.3 KitKat KTU84L zip file.
  8. Now you need to launch a command prompt there. Press and hold ‘shift’ key and at the same time right-click the folder’s white space. Select ‘open command prompt’ from the context menu.
  9. For the installation to start you will need to enter the following command line: adb sideload update.zip
  10. After you press ENTER the Nexus 7 3G tablet will begin the installation process.
    – wait until the install is complete and note that it might take over fifteen minutes for all files to be installed correctly.
  11. When the update is finished you will see the Recovery Mode options. Select ‘reboot system now’ and wait until the Nexus 7 boots in normal mode.

That is it, you have successfully installed the new Android 4.4.3 KitKat for your Nexus 7 3G.

If you have a custom Recovery installed on your device, then you can still update the tablet using CWM or TWRP recoveries.

How to install Android 4.4.3 KTU84L for Nexus 7 3G 2012 using Custom Recovery Mode:

  1. Download the same firmware zip file as in the first tutorial.
    – save the file on your PC.
  2. Connect the Nexus 7 to your computer via USB cable.
  3. Move the Android 4.4.3 KitKat zip to its internal sdcard.
  4. Disconnect the tablet from PC when the transfer is complete.
  5. Power off the tablet now.
  6. Next, boot it into Custom Recovery Mode.
  7. Select the ‘install zip from sdcard’ option or ‘install’ for TWRP.
  8. Locate the Android 4.4.3 KitKat zip and load it into Custom Recovery menu.
  9. Confirm the installation process.
  10. When the update is complete you can reboot the Nexus 7 3G in normal mode.

Test all of its new features and functions and then tell us in comments if there are any major improvements when comparing it to the previous Android OS version.

If the update fails at your first attempt, then you try to repeat the entire tutorial more than once.

If you have any problems installing the update you should leave a detailed commend below and we will try to come up with a viable solution.

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