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Update LG G3S (Beat) to Android 8.1 Oreo with Lineage OS 15.1

Are you still using the LG G3S (also known as LG G3 Beat)? That’s not a bad thing, though the performance you receive are a little bit outdated. But, if you aren’t ready to pay for a new and more powerful smartphone, or if you are just keeping the G3S as your backup driver, you will most likely find this update opportunity quite useful. Yes, we will be checking on how to install the latest Android build (Android 8.1 Oreo) on your own smartphone, so let’s see what’s all about.

This guide is going to teach you how to install the Android 8.1 Oreo firmware on your LG G3 S. But, we will not use an official Android update but a custom ROM software – the Lineage OS 15.1 platform. So, among the actual flashing steps that must be followed we will discuss about the advantages, the risks and essential pre-requisites that are implied. Thus, make sure you read all the lines from below before choosing to resume the LineageOS 15.1 installation process for your LG G3S Beat.

Lineage OS 15.1 is a custom ROM based on the former CyanogenMod platform. This firmware is powered by Android 8.1 Oreo OS, but it represents a free aftermarket distribution of the same software. It is a firmware based on the stock Android OS but not an official software as it brings a modified system and different features, apps and capabilities which cannot be found on the stock OS.

Overall, the LineageOS 15.1 ROM is light and fast. It’s packed with a new UI and with various customization and optimization options. And with this Android 8.1 Oreo iteration your LG G3S (Beat) should run better and faster than before, everything while you can enjoy an upgraded battery life and an improved functionality. Bottom line, you can now successfully improve general performance on your phone and use the latest apps and processes that are available out there.

Of course, since we are discussing about a custom ROM and not about an official Android roll out, we must talk about some downsides too. In that respect, if you choose to complete this update solution you are going to lose your LG G3 S warranty. Also, you can lose access to some built-in apps. The warranty flag can be restored only if you choose to reinstall the stock Android firmware on your smartphone.

Moreover, the data that isn’t there from day one will be erased from your handset. That’s happening because during the Android 8.1 Oreo update operation a hard reset will be required (the wiping process is detailed during the steps from below). Thus, if you don’t choose to save everything before doing anything else, you are going to lose your personal data, info, accounts and files. Therefore, take your time and secure your contacts, call logs, texts, images, videos, audio files, market apps, internet settings, calendar info, saved passwords, IMEI / NVRAM data and anything else that might be needed afterwards.

A general backup can be applied by syncing files with your Google Account, by using built-in cloud storage platforms or by downloading dedicated backup and restore platforms from Google Play. Additionally, a more complex backup operation can be applied by initiating a Nandroid backup process. That operation will save the current Android OS that runs on your LG G3S (Beat), so that if in the end the Lineage OS 15.1 will not run as you expected you will be able to use the Nandroid backup package for going back to stock.

You have to root your LG branded device first because a custom ROM can be installed only on rooted systems – with root you will manage to unlock the Android OS, which will afterwards be modified by the new Android 8.1 Oreo platform. Moreover, after root is ensured you have to install a custom recovery image on your phone. Through that dedicated environment you will be able to complete the actual flashing procedure. Note: for making things work without experiencing issues, I recommend you to use TWRP recovery on your LG G3S (Beat).

This is going to be a manual Android 8.1 Oreo update operation. So, a computer should be near you as well as your smartphone and its USB cable. On your LG G3 S (Beat) you need to gain Developer rights, a process that can be applied by tapping for 7 or 10 times repeatedly on Built Number (during that repeated tap you will get the ‘you are a developer’ message). The USB Debugging feature must be checked on your phone and you can find this field under ‘menu – > settings – > developer options’.

You must check the power left on your phone. In case the battery status bar is showing less power than 50%, you must charge your LG G3S before resuming the steps from below. If you don’t apply the charging process you will most likely end up in experiencing software related problems on your device – different malfunctions can be caused within the Android core system if your phone gets turned off in the middle of the update operation.

How to Update LG G3S (Beat) to Android 8.1 Oreo with Lineage OS 15.1 custom ROM firmware

  1. Power on your computer and download the Lineage OS 15.1 custom ROM package compatible with your LG G3S – you can get this Android 8.1 Oreo software from here.
  2. Also download compatible Google Apps from here as this package is not included in the update file.
  3. Save both files on desktop.
  4. Meanwhile, switch off your smartphone and wait while the power off is completed. Next, reboot recovery mode on your Android device.
  5. In recovery choose to make a full wipe by selecting ‘wipe data factory reset’ followed by ‘wipe dalvik cache’ and by ‘wipe cache partition’.
  6. When done, return to main menu of recovery and choose ‘reboot’.
  7. Afterwards, connect your LG G3S with your computer with the help of the USB cable.
  8. From your computer transfer the downloaded packages from desktop on your smartphone and when done remove the USB cable as the computer is no longer required.
  9. Now, go to recovery mode again and this time, tap on Install. Then, load the firmware package and swipe in order to start the update process – if TWRP recovery isn’t used you might have to choose ‘install zip from SD card’ followed by ‘choose zip from SD card’.
  10. Wait while the Lineage OS 15.1 ROM is flashed and when done repeat the last step and install Google Apps.
  11. In the end, from main menu of recovery select ‘reboot system now’.
  12. That’s all.

There you have it; that’s how you can update the LG G3S (Beat) to Android 8.1 Oreo firmware. You should test the Lineage OS 15.1 custom ROM software at this moment in order to make a proper idea about its overall functionality. You can share your update experience with us and your observations about the LineageOS 15.1 platform by using the comments field from below. If you experienced problems, based on what you share with us we will try to assist you as soon as possible.

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