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Install LG G3 UI on LG G2 using Optimus G3 Android 4.4.2 KitKat Custom ROM

Do you want to customize the looks and optimize the performances of your LG G2? I bet you do, but what would you say if you were capable to use the LG G3 UI on your LG G2 along with other dedicated features that were launched along with the release of the G3? Well, first of all you should know that all these are possible and you can anytime choose to make your LG G2 look like the LG G3. Then, you should know that that’s possible only if you choose to update your device with the new Optimus G3 custom ROM firmware, a software that is based on stock LG G3 firmware.

Now, first of all you should know that the Optimus G3 firmware was developed by those of xda-developers so we should thank them for the present step by step guide. Since the ROM is made available by third party devs, the same isn’t an official update released by LG for your G2. Moreover, the Optimus G3 is based on official LG G3 firmware so a custom version of Android 4.4.2 KitKat OS will be ported on your LG G2. This ported OS will bring stock and extra features, apps and capabilities, which can’t be usually found on the default version of KitKat system.

As I have already mentioned during the introduction of this tutorial, if you choose to update your LG G2 with Optimus G3 firmware, you will be able to install the LG G3 UI on your Android device along with other features that can be found only on the G3. Basically you will bring the G3 Android experience on your LG G2 without waiting for an OTA update to be released by LG in that matter. Moreover, since we are talking about a custom ROM, other important tools will be installed on your device, tools and general settings that can be used for customizing the looks and optimizing the performances.

Thus, with Optimus G3, your LG G2 will runs faster and better; the battery life will be improved, the web browsing experience will be updated and you will have access to the internal system of your phone which means that you will be able to remove bloatware and make changes within the Android system. The ROM is also stable and will smoothly run (without lags, force close errors, alert or any other issues) on your LG G2 – this according to the users who have already flashed this LG G3 based firmware.

Unfortunately, since this is not an official firmware, by installing the same you will lose your LG G2 warranty – because you will apply a custom ROM and not a stock Android OS provided by LG. Moreover for being able to complete this installation process, root access must be ensured on your LG G2 (as you know, when gaining root access the warranty gets void). Complete the root process because the Optimus G3 ROM will have to access some internal and in built programs from your device. At the same time, you need to know that you can flash this software only by using a custom recovery image – in that matter I recommend you to install the latest version of CWM or TWRP recovery.

Sine we are dealing with a custom installation process, before doing anything else you need to backup your data – also a wipe will be required and when doing the same all of your data will be erased. So, because of that, use compatible backup and restore apps and save everything that you might need or use afterwards (at least, save your contacts list, market apps, personal data, info and accounts, text messages, internet settings and so on). A good idea will be to make a Nandroid backup for saving your current ROM because if you will not like the Optimus G3 firmware, you will probably want to restore your old software.

A computer will be required because you will have to download some files on the same; therefore at some point you will have to connect your phone with your computer – on your device the USB debugging option must be enabled (go to “menu – settings – developer options”). On the computer you are using, deactivate – only temporarily – the security tools, because antivirus like programs might interfere with our work. Charge your LG G2 especially if the battery status shows less than 50% power left – else if you device gets turned off in the middle of the update operation, it might also get bricked.

This guide should be applied only by those who own the LG G2 and no other Android based device. The Optimus G3 custom ROM firmware is compatible only with the mentioned smartphone, so try not to mess things up.

Install LG G3 UI on LG G2 using Optimus G3 Android 4.4.2 KitKat Custom ROM Firmware

  1. From here download the LG G3 based firmware.
  2. Also, from the same page download the baseband package for your LG G2.
  3. Save these files on your computer, preferable on desktop – don’t unzip the files.
  4. Connect your smartphone with your comp-uter by using your phone’s USB cord.
  5. Transfer the downloaded files from your desktop to your phone’s SD card.
  6. Unplug the USB cord and turn off your device (press power button and select “power off” or keep pressing the power key for about 15 seconds).
  7. Enter recovery mode on your Android device.
  8. From recovery wipe the system and clear cache; just select “wipe data factory reset”, “wipe cache partition” and “wipe dalvick cache”.
  9. Return to main menu of recovery and from there select “install zip from SD card” followed by “choose zip from SD card”.
  10. Pick the firmware file and install the same; repeat the same process and install the baseband package.
  11. In the end, from recovery select “reboot system now”.
  12. Note: if your LG G2 will get stuck in a boot loop, from recovery select “wipe data factory reset” and “wipe cache partition”.

Congratulations; you have successfully completed our step by step guide. So, you have managed to install the LG G3 UI on your LG G2. Now, on your LG G2 the Optimus G3 custom ROM software is running, so you should test the same in order to enjoy the G3 like Android experience. If there are issues or if you find bugs or things that aren’t working properly, share the same with us and with other users by using the comments field from below.

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