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Manually Install Stock Android OS on LG Optimus G

Reflashing the stock Android OS might be the easiest way in which you can fix a soft bricked Android device. Moreover, installing the official Android firmware manually is great as you can safely test custom ROMs and MODs without worrying that you will end up in using a buggy firmware. Thus, if you do want to learn how to manually update your own LG Optimus G with the latest official release of Android software, don’t hesitate and use the guidelines from below.

I am not talking about a new OTA that’s available for the Optimus G. As we all know the phone was left stuck on KitKat OS, so during this tutorial I’m not planning in tweaking things in any matter. Thus, bottom line I am going to teach you how to easily and manually flash or re-flash the stock Android 4.4.2 KitKat OS on your own model of LG Optimus G. The tutorial is compatible with most models of the mentioned device, including: E970 AT&T, LS980 Sprint, F180 and International E975.

Moreover, this step by step guide can be successfully applied whether you have installed a custom ROM, or if you just want to enjoy a stable and smooth Android firmware, right from the scratch. As already mentioned, this will also be a great troubleshoot solution through which you can take care of various software related issues such as: bugs, lags, force close errors, alerts, screen freeze, battery drain, heating problems, boot loops and total blackouts.

If you are using a custom ROM (like CyanogenMod, AOKP or ParanoidAndroid), a rooted device, or if you have recently unlocked the bootloader of your LG Optimus G, now you can also restore your device back to its initial state. You see, by completing the steps from below you will be able to revoke root access, relock the bootloader, flash stock recovery image and ensure the default Android experience. Therefore, your Optimus G will be locked and pre loaded with factory and default restrictions, apps, features and processes.

So, there you have it; those are the advantages related to this operation. You also have to know that the update process is an official task which can be easily completed by using a dedicated flash tool. Thus, you won’t have to download and install risky programs and you can safely apply the lines from below even if you are a newbie.

However, if possible, the best will be to backup your LG Optimus G before installing the stock Android KitKat OS. Why? Well, during the update process a wipe might be issued, or your data might get corrupted. Therefore, if you think that you have important data saved on your phone (like contacts, call logs, text messages, internet settings, images, videos, audio files, IMEI / NVRAM, calendar info, etc.), before doing anything else consider in placing everything in safe hands – just use dedicated apps from Google Play, a computer, a SD card or a cloud storage software.

Take note that a computer is required as this is a manual downgrade / update operation. It will also work only for the LG Optimus G, so try not to mess things up in that matter. In order to make things work properly, on your computer temporarily turn off antivirus protection (this is only optional) and install the LG Optimus G USB drivers. Then, on your smartphone, before flashing the stock Android 4.4.2 KitKat OS, gain developer options (tap a few times on Built number under “menu – settings – about phone) and enable USB debugging option (just access “menu – settings – developer options”).

Don’t forget to charge your Optimus G before going any further – plugging in the charger is a must especially if the power left is currently lower than 50% (if your smartphone turns off in the middle of the update operation, different software related problems might be caused).

How to Manually Install Stock Android 4.4.2 KitKat OS on LG Optimus G

  1. On your computer download the stock Android OS in KDZ format – you can get it from this page (do note that your phone’s IMEI will be required – dial *#06# in order to obtain the IMEI).
  2. Save this file on your computer, preferable on desktop.
  3. Next, go to this page and download the LG Flash tool which will be required on the update process – unzip the file on your computer.
  4. Turn off your Optimus G and then enter it in fastboot mode: in order to do so, after completing the power off procedure press and hold both Volume keys and while doing so connect your phone with your computer with the help of the USB cable.
  5. On your computer open the LG Flash Tool folder and inside it transfer the KDZ firmware file.
  6. Run the flashing tool in the end.
  7. Now make the following changes: Select Type – CDMA, Select KDZ File – pick the firmware file you have just downloaded.
  8. Now select Normal Flash if on your device is are already running on stock Android OS or choose CSE Flash if a custom ROM is powering your Optimus G (do note that in the second option your data will be wiped out).
  9. Select Start on the next widow and then pick up your Region and Language; when done click on “ok”.
  10. Android 4.4.2 KitKat OS will now be installed on your LG Optimus G.
  11. In the end, unplug the USB cord and restart your device.

That’s it; you now know how to downgrade / update your LG Optimus G back to stock Android OS. Thus, you can think in tweaking your Android device as you will be capable to restore your phone back to its initial state if that will be required.

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