Unbrick Soft Bricked LG G3

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This post here is to unbrick soft bricked LG G3 only. Please don’t try it on any LG devices. This post will also work if you want to install stock firmware on LG G3 or unroot LG G3. Also this post here is for soft bricked devices only not hard bricked ( soft brick vs hard brick ).

We are not responsible for any data loss or other problems that occur by using this tutorial. Flashing ROM deletes internal memory. Use at your own risk.

Requirements :-

  • 1
    LG Flashtool program
  • 2
    Stock firmware for your model of LG G3
  • 3
    DLL file for you model of G3
  • 4
    LG drivers for Windows
  • 5
    PC with Windows on it

All the downloads are provided at the end of the post.

How to unbrick soft bricked LG G3

  • 1
    Download and install LG USB drivers on your PC.
  • 2
    Download firmware for your model of LG G3 only. Also, download the DLL file for your version of G3. If your model isn’t listed, write a comment below and we’ll try to add firmware for your model. DON’T FLASH FIRMWARE OF A DIFFERENT MODEL OTHERWISE YOU WILL HAVE A HARD BRICKED DEVICE.
    Unzip the stock firmware zip file and you will find a file ending with .tot extension.
  • 3
    Download and unzip the LG Flash tool program on your PC. Inside the folder, you will find a Setup EXE and MegaLock.dll file. Double click the EXE file to install the program on your PC. Don’t run the program after installing it, just copy the MegaLock.dll file to C:\LG\LGFlashTool.
  • 4
    Connect your  micro USB cable to PC. Power off your LG G3 and then while holding Volume Up button, connect micro USB to your device. You should now see Download Mode message on your device. After sometime, it will change to Firmware Update screen.
  • 5
    Open Device Manager, under Ports (COM & LPT) you will find LGE Mobile USB Serial Port along with COM port. If you don’t see COM41 written on it, double click on it. Go to Port Setting tab and click on the Advance button. Now under the COM port number, select COM 41. LG Flashtool software need COM41 port number to work.LGE Mobile USB Serial PortPort Settings - LGE Mobile USB Serial PortSelect COM Port number - LGE Mobile USB Serial Port
  • 6
    Now open LG Flashtool software, check Select Manual Mode. In  DLL section set the DLL file and in the S/W section,  select .tot firmware file that you got earlier. Then click on OK.Set DLL and Firmware - LG Flashtool software
  • 7
    Click on the Right Arrow button on the top left corner of the LG Flashtool software. After the software is finished checking your files, it will say READY!!. After seeing the message, unplug your device from PC, wait for about 5 seconds and then plug your device back.Right Arrow button - LG Flashtool softwareFlashtool show Ready - LG Flashtool software
  • 8
    After sometime (about 2-3 minutes), LG Flashtool will begin installing the stock firmware on your device.
  • 9
    When LG Flashtool is finished installing the firmware, it will show a PASS!! message and your device will show 3 number.LG G3 Flashing - LG FlashtoolLG G3 Shows number 3
  • 10
    Pull out your battery now, then plug in and your device will boot now.  Within few minutes, you will see a Welcome Screen.

That’s it! You have an unbricked LG G3 device.


Some of the users are getting Factory Reset 2 screen after flashing stock ROM instead of Factory Reset 3 screen. There is nothing wrong with this guide, this issue comes with only few devices so you might not get it. But if you do, I have made a guide to how to get rid of this issue. If your device is giving Factory Reset 2 screen after flashing the firmware then you can follow my guide to unbrick LG G3 stuck on factory reset 2. USE THE GUIDE ONLY IF YOUR DEVICE SHOWS FACTORY RESET 2 SCREEN.

Downloads :

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Rohan Kandwal

I am an Android Enthusiast and love to learn new techniques, tips and tricks. I also love to help other who face any difficulty in using technical stuff.. Google+

  • ian phillips

    Great Tutorial thanks Rohan.

    • RohanKandwal

      Glad to be of help bro.

  • JC

    My pc crashed in the middle of doing this. My phone was stuck on Factory Reset Status 2. Pulled the battery and again followed the steps above. Press up volume, continue to hold while inserting micro USB. Phone goes to Firmware Update screen. Confirm phone is on COM41. Run LG Flash Tool. Manual mode. Select .dll and .tot. Upgrade DL via USB. Click on the arrow. Ready!! Unplugged phone for 5 seconds. Plugged back in. After more than 5 minutes, nothing else has happened. Help, please.

    • http://www.unbrick.itcse.com Rohan Kandwal

      Sorry for so late reply, I was away so couldn’t reply. Hopefully, you would have gotten rid of the error yourself by now, if not, I have updated the guide.

  • Давид Јеремић

    I was on MIUI 7 Android 4.4 and flashed BlissPOP 4 and some gapps, after that phone booted normaly but after second restart im stuck at bootloop..
    Mostly it just show LG logo screen and restart, but sometimes it goes to bootanimation and restart or even fully boot and after few minutes restart again
    If its fully booted and every time I try to install some apk from playstore it also restart again, and apk is installed when its booted again..
    Iv tried Stock Kitkat and Lollipop (KDZ) and CM 12 12.1 ROMS and still same thing..
    Any suggestions? Im freaking out! Plz help! :O
    Sorry for my English and thanks in advance!

  • Давид Јеремић

    Now iv tried this (tot) method and process finished as it should but after i puled out battery and put it back phone stack just at LG logo screen now and restart all the time.. Now cant even got to bootanimation or full boot..

  • Yehiel Fishman

    I really need your help man … something went wrong(maybe the usb cable moved and it stopped) while i tried to update software on my lg g3 … and now its stuck on Firmware Update mod , no meter what i do , i tried everything but no luck … i think my phone now is dead for ever :( and you are the only person who can help me .
    Phone model : Lg-D855 (16 gb Memory )
    much love .

  • indrajit chakraborty

    mine is d855 global v10e with stock kitkat rom, followed every step in your instructions but at last after watching *READY” in lg flashtool v.1.5.10 i unplug my g3 from PC, waited for about 5 seconds and then plug my device back. afterwards there is no action of installation of firmware showing countdown time for more than 1 hour & continuing showing *READY”. i then again unplug my g3 from PC, waited for about 5 seconds and then plug my device back, waited for 40 minutes but the result is the same. then i unplugged it from my laptop & shut down by detaching the battery. please help. after watching so many good reviews, i waited for price to drop & bought it just 2 months back. it became soft bricked just after installing a font by rom toolbox pro.