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How to transform the LG G2 into an LG G3

How to transform the LG G2 into an LG G3

A member of the XDA forum, OptimusRS, released a firmware version of the latest LG G3 Optimus UI which can be ported onto the LG G2. Here is how to install it, which will allow you to take advantage of the 4K display on the LG G2.

lg g3 teaser
© AndroidPIT


This procedure has its risks, and if you don’t follow the procedure as described below, you could end up with a bricked phone. Neither AndroidPIT nor I will take responsibility for any of the damages that happen to your LG G2.

Please also note that this procedure will erase all of the data on your device, which is why you should perform a full backup of everything. To be able to backup your data, you can use an app such as Helium App Sync and Backup. You can also use Google Backup, where you must ensure that the box is ticked for ‘’Backup My data ‘’in the Backup and Reset section of the settings on your phone (as well as make sure the email address is the right one). Lastly, you can manually backup all of your data to your PC with a USB chord. Everything is 100% safe? Let’s get on with the procedure.

This method is just for the LG G2 D802! The Optimus G3 ROM which was modified by OptimusRS has been pre-rooted, SuperSU and BusyBox are already installed, and it integrates new LG G3 interface functions like 4K and Magic Focus, as well as a bunch more which you can discover in our LG G3 software tour.


  • Your LG G2 needs to be rooted.
  • You need to have a custom recovery installed on your G2.

Install the LG G3 Optimus firmware on your LG G2

  • Download the ROM file called OptimusG3 V1.0, which by clicking on this link, you can find at the bottom of the page under the headline Downloads. Make sure you take the most recent version.
  • Download KK_Baseband for your model number
  • Copy both ZIP files to the root of your LG G2.
  • Reboot the LG G2 in recovery mode (which is done by pressing the volume down and power at the same time and letting go of the buttons once the LG logo appears, and then pressing these again right after until your phone is booted in recovery mode).
  • Complete a full wipe (wipe data/ factory reset, wipe cache, wipe system, wipe data)
  • Always install the ROM from recovery mode (install zip) and flash the KK_Baseband

And there you go! The LG G2 will now have the LG G3 user interface, and now you can even FILM IN 4K! Amazing.

© XDA Forum / OptimusRS

If you have problem accessing 4G, or the problem disappears, you can install a root explorer app, like Root Explorer or ES File Explorer, and in /system/app, cut out the LteConfigs.apk  file and copy this into any non system file (downloads, device root etc).

Did you give this a try? What do you think of the new LG G3 UI?

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  • Renzly Oct 28, 2014 Link to comment

    Question guys hmmm If im going to root my LG G2 (Korean Version) to LG G3 Rom as posted above do I need to have a PC/Laptop? or I can do rooting on the LG G2 itself? Thanks! have a great day!

  • i'm about to be hands on with the LG G2 and the temptation to do this G3 mod is too much to bear...lol... can i/should i do it BEFORE or AFTER i activate the unit... i am going to hold off transfering any of my ringtone, images and data until i know the unit is functioning properly in the network...

  • NMG Jul 4, 2014 Link to comment

    First, to the author, the G2 cannot and will never deliver 4K "display" resolution. It can render video and games in 4K while wirelessly transmitting to a 4K (UHD) screen.

    The G2 already had the 4K recording and Magic Focus mods well before this ROM.

    That being said, it is cool to get the LG G3 GUI. Considering that you can overclock the CPU/GPU, you can get what is almost a slightly smaller G3.

  • Does this rom have knock codes for security like the stock rom or is this feature lost? Also will the wifi calling feature work on T-mobile phones?

  • alquem com uma rom cm 11 para optmus g e977

  • How can I install this software on the d801 g2?

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