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How to Install Official Lineage OS on LG G3

As you know an unofficial version of Lineage OS was made available for the LG G3. While the firmware was perfect for those who were curious about what’s new in the CyanogenMod iteration, the actual firmware wasn’t quite stable and smooth. Thus, if you were waiting for the official Lineage OS release, then this tutorial is just what you need. Yes, during the following lines you can learn how to successfully install the official built of the Android Nougat based Lineage OS on your own LG G3.

So, the official Lineage OS is now available for the LG G3. Of course that doesn’t mean that you are about to complete an official operation – you are still going to flash a custom ROM that is only based on the stock Android Nougat OS. The Lineage OS is developed by third party devs and can’t be associated with Google or with LG. Therefore, you are still going to lose your phone’s warranty if you choose to resume the guidelines from this tutorial, so be careful and choose wisely – don’t worry, if you follow the steps from this guide everything will be save and secured.

As for the actual Android Nougat update you really have nothing to worry about. The Lineage OS is stable and will smoothly run on your LG G3. Moreover, the system is light so it will be fast and secured – in addition you can remove bloatware and start up programs, you can overclock or undervolt CPU frequencies, you can install custom kernels and you can complete many other tweaking procedures in order to tweak your device. So, your possibilities will be endless as you can use the Lineage OS for customizing and optimizing everything.

According to those who have already tested the Lineage OS on the LG G3, everything is working without issues – you will not have to deal with lags, bugs, force close errors, screen freeze, total blackouts or any other similar malfunctions.

Now, if we are to discuss about the update process that will shortly follow, you must know that your data will be wiped out – as you will notice it is essential to make a hard reset and to clear app data cache before installing the new custom ROM in order to make things work properly. Therefore, I strongly recommend you to make a backup in order to save what’s important for you – then, you can restore your personal data, info, accounts and files on the new Android Nougat system without problems. For being able to do so use only trustful backup and restore methods: sync your data with your Google Account, manage built-in and official cloud storage services or download tested apps from Google Play.

And since we are on the backup subject, you can choose to perform a complex backup in order to save the Android system that currently powers your LG G3. Thus, in this manner you can avoid further unpleasant situations as you can anytime choose to restore the old firmware back – so, if the new Nougat OS will not run as you expected you can easily choose to go back to stock. This can be ensured by making a Nandroid backup process.

There are two additional operations required for this update process. So, before applying the steps from this tutorial you first have to root your LG G3 and install a custom recovery image (preferable TWRP or CWM recovery) on your device. The root will unlock the Android core system which will be then prepared for further customization and optimization processes and with the custom recovery image you will be able to complete all the flashing steps from down below.

On the other hand, this is a manual update operation so all the classic pre requisites are also implied:

  • You have to download the files from below on a computer or on a notebook – temporarily deactivate the security protection from this device if you cannot complete the download process.
  • Your smartphone and its USB cable are also required because you will have to connect your phone with your computer.
  • Enable Developer Options on your LG G3: that can be done by tapping on Built Number repeatedly until the ‘you are a developer’ message is displayed.
  • Check the USB Debugging field on your phone: this option can be checked if you access the following field – “menu – settings – developer options”.
  • Plug in the charger without hesitation if your phone runs out of juice – basically, you must charge your device if the power left is lower than 50%.
  • If you skip the charging you risk in soft bricking your LG G3 – malfunctions can be caused if your phone will get turned off while you try to flash the Lineage OS.
  • Of course, use this step by step guide only for the already mentioned Android based device; otherwise you will risk in soft bricking your smartphone or tablet.

How to Install Official Lineage OS on LG G3

  1. Download the Android Nougat based Lineage OS package from here. Place this file on your computer, if possible on desktop.
  2. Optional: download compatible Google Apps and place this file near the update package – Google Apps are not included in the Lineage OS system so it must be installed separately.
  3. Connect your smartphone with your computer via USB cable and then transfer the downloaded files from your computer to your phone.
  4. Afterwards, unplug the USB cable – don’t worry, the computer is no longer required.
  5. Switch off your LG G3 – and wait while the switch off process is being completed.
  6. Enter recovery mode on your handset and from recovery clear the system in order to prepare your device for the update process – thus, select: “wipe data factory reset”, “wipe cache partition” and “wipe dalvik cache”.
  7. Wait a few moments until the system is cleared and when done return to the main menu of recovery.
  8. From there, this time select: “install zip from SD card” and “choose zip from SD card”.
  9. Pick up the Android Nougat update package and flash the Lineage OS on your LG G3. Optional: load and flash the Google Apps package by repeating the process.
  10. When everything is completed, from main menu of recovery select “Reboot system now” and enjoy.

You can now try the new Lineage OS in order to check how the Nougat features, apps and capabilities are running on your LG G3. Of course, don’t hesitate and share everything with us and with our readers by using the comments field from down below.

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  • Mostafa El Gammal

    i used this operating system, it works very good, but after while i wanted to update the rom to newer version, then after updating, the mobile just opens and then restats & get freeze.
    it accepts software but with the same problem, restarts just after opening.
    please help….