How to unbrick LG G2 with stock firmware

Unbrick lg g2[Last Update: 09/03/2015] Usually we got bricked our device after doing some experiments or installing new firmware, mostly probably the unofficial or developed by third parties. In that case, to get back our device to working state, install the stock firmware over it is ideally best options, as its restore the device to original state. Launched in August 2013, LG G2 is being a good choice for high-end smart phone seekers. The device has been built with solid high-end configuration, with sleek look, and of course a good brand is behind it.

What’s New: Install Android 5.0 on LG G2

Currently, LG G2 is not so popular in Android developers but still there are many Roms, and mods are available to apply on it. But installing anything which is not officially released or distributed by Mobile Manufactures, is somewhat dangerous. It can damage the device to extreme levels, and can get hard bricked. If you have bricked your LG G2 smart phone, then use this guide to make it work again. In this post, we are presenting the stock firmware for almost all models of G2, with installation guide.

Installing stock firmware is ideally a best way to proceed if you’re suffering from problems such as, bricked condition where phone is not booting up or not responding, stuck to boot screen, to simply un-root the device, and to remove the installed custom Rom. The best is that, it is completely safe to proceed because it is an official stock firmware. So let’s get started repairing the device.


This stock is developed for below listed models for LG G2 smart phone. So you must first check the model number of your device under, phone’s Settings->About->Model. If must be from one of below listed:

  • LG G2 D802
  • LG G2 D805 (Brazil, Mexico, Panama)
  • AT&T G2 D800
  • T-Mobile G2 D801
  • Sprint G2 LS980
  • Verizon G2 VS980
  • Korean LG G2 F320K
  • Korean LG G2 F320L
  • Korean G2 (SKT) F320S

You need a windows based PC with internet connectivity to download the firmware, and flashing tool. Supported windows are, Windows XP, 7 and 8.


→ Get the official stock firmware for your LG G2 model from below list. Remember, download the .tot/.kdz file. 

Download on the basis on carrier and country!

→ Get the B2CAppSetup.exe file from here, and install it on your PC. Basically it is a LG Mobile Support Tool.

→ Get the Flashing Tool from here ( Extract the file to your PC, under it you’ll get a file named “UpTestEX.exe“, remember it.

How to install Stock firmware on LG G2

  • Download the desire firmware on PC depending on your model number of your device.
  • Now turn off the device, and wait for 5-7 seconds.
  • Turn on the device into recovery mode by pressing and holding Volume Up Key and then plug the USB cable. Connect it to PC.
  • From extracted FlashTool.1.0.54 folder, Run the UpTestEx.exe file. A new program window will appear PC.
  • Once you launched the program, click on the “Select Type”, then pick the 3GQCT from the list.
  • Click on “Phone Mode”, then select the “DIAG” from the list.
  • Under “Select Kdz file”, find and locate the downloaded firmware file.
  • Under test with CSMG Client, click the Normal web upgrade test. Then you’ll see a new Read Phone Information test button.
  • Now click on Upgrade Start button, a new pop-up will appear which will ask you to select country & Language.
  • Select “Republic of Korea” as country and “English” as language to proceed.
  • Then press “OK” to proceed to installation process. Wait until the process gets completed. Once it get done, your phone will boot up itself. Now you can unplug the device from PC.
  • Now again, turn off the device, and turn it on by pressing and holding Volume Down+Power till it gets on. This step will factory reset the device.

Now your phone will boot up to home screen. Then enter your Google Account settings to get started with it.


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