Android is the greatest ecosystem for mobile devices but among things of “WOW” there is a great disparity of distribution that is certainly not a good thing. Android is the only OS with multiple OEMs who theme and customize it with their own flavor. This variety is probably the greatest reason behind the time-gap between the pure AOSP updates released by Google in Nexus devices and the customized updates for device from other brands.

It has been more than four months since the time Android 4.4 KitKat was released but the new flavor of Android made its way to device from OEMs like HTC, Samsung, Sony and LG after months. As a flagship phone, the KitKat update turned its face to the LG G2 rather late. Anyway, the Android 4.4.2 update is finally out for the device. Following the Open LG G2 and AT&T G2, the T-Mobile variant started receiving the official KitKat.

If you own the awesome G2 and have rooted and install TWRP/CWM recovery on it, you’ll not be able to receive and install the OTA. For users with a custom recovery, downloading the KitKat firmware using LG Mobile Support Tool and installing it manually might be the only way to get the new update working on their device. However, flashing the official firmware with .kdz or .tot extension will remove the root and custom recovery both.

The bad news is that there is no working method to root the LG G2 on the Android 4.4.2 KitKat firmware. And, the good news is that, if you own any of the following models of LG G2 with root and TWRP/CWM recovery, there is still a way to preserve root on the device.

  • AT&T G2 D800
  • T-Mobile G2 D801
  • Open LG G2 D802

Today, we have come up with a way to update LG G2 to Android 4.4.2 KitKat without loosing root privileges. Please note that having installed the stock firmware, the TWRP recovery will be replaced with stock recovery.

T-Mobile-LG-G2-KitKat

Requirements

  • LG G2 D800/D801/D802
  • Root access and TWRP Recovery version 2.6.3.3 or higher.

Note:

If your LG G2 does not have root access and a custom recovery, you can install the Android 4.2.2 KitKat firmware manually by following this tutorial.

Downloads

Download the ROM:

  • AT&T G2 D800 (with TWRP):  d80010d_to_20c.zip  (requires D80010d firmware as base)
  • T-Mobile G2 D801:  D80120a_KK.Zip
  • Open LG G2 D802:  D802_Stock_KK.Zip

Download Latest SuperUser:  UPDATE-SuperSU-vx.xx.zip

See This Too:

How to Restore LG G2 to Stock Firmware (All Models)

Warning!

The procedure described in this tutorial is considered risky. Think twice before you make up your mind to proceed with it. We hold no responsibility if anything bad turns up. Be careful while conducting things.

Installing the KitKat ROM on G2

Now that you have downloaded the required files already, let’s proceed to install the Android 4.2.2 ROM on the LG G2.

  1. Copy the ROM, Google Wallet (for D800) and Chainfire’s SuperSU files to your phone.
  2. Reboot your LG G2 into TWRP recovery mode. If you do not know how to do that, use TWRP Manager. Open the app and tap Reboot> Recovery option. : [appbox googleplay com.jmz.soft.twrpmanager]
  3. After entering the TWRP menu, tap Wipe> Advanced wipe. Then wipe Dalvik cache, System, Data, and Cache.
  4. Then go back to TWRP main menu and tap the Install button. Navigate to the ROM file and select it.
  5. Swipe the confirmation slider to install the ROM.
  6. Then go back and select UPDATE-SuperSU-vx.xx.zip file and install it too.
  7. Finally, reboot your phone using Reboot> System option in TWRP.

Wait till your LG G2 boots up normally. The first boot after installing a new ROM takes a little longer than usual, so wait patiently. Congrats, you AT&T/T-Mobile/Open LG G2 is now running the latest official Android 4.4.2 KitKat ROM and it has root access as well. Enjoy!

Also Try This:

Tweak And Customize LG G2 With G2 TweaksBox And G2 Xposed Modules

sources: 123