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How to Downgrade LG G3 D855 to Lollipop [6.0 to 5.0]

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LG G3 got the Android Marshmallow update recently in the last week of December, 2015. However the users who are on Marshmallow but they don’t like it and want to go back on Lollipop then this guide will show how you can downgrade LG G3 D855 to Lollipop Stock OS. The 6.0 update was first available to users in Poland. At now Marshmallow update is available to some regions and will be available to most regions after some time. We also publish the article for users who didn’t get the Android M update that how they can manually update LG G3 D855 to 6.0 Marshmallow Official.  So, if you are one of those who have tasted the Android Marshmallow OS and now want to Downgrade LG G3 D855 to Lollipop then the procedure below will help you to go back to 5.0.1 lollipop from 6.0 Marshmallow firmware.

First LG G4 got the Android M update and I published a successful procedure on how to Downgrade LG G4 to 5.1.1 Lollipop. Now I will show you how you can downgrade your LG G3 to stock lollipop firmware. You may be familiar with LGUP tool which is a new tool for LG devices to flash KDZ files. So we will use LGUP tool to flash Lollipop file on LG G3 because downgrading from Marshmallow to Lollipop is not possible. LGUP will do this and trsut me it is way more easy to use LGUP then LG Flash tool. So, follow the instructions below to downgrade LG G3 to Lollipop.

Downgrading LG G3 to Lollipop Official OS

The process to downgrade your G3 D855 is not that difficult. LGUP tool will be used to downgrade LG G3 and using is as easy as cake. You won’t  need to go into that download mode. All you need to do is to connect your phone to the computer, run the LGUP and chose the KDZ file then click on the start button. Enough of the talk guys, let’s start to downgrade LG G3 to 5.1.1 Lollipop. Before starting, read the disclaimer and necessary instructions below.

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Disclaimer

  • This method is only for LG G3 model no D855. Do not try this on any other model. If you are completely unaware of this kind of process then you should not this unless you do little research first. If something wrong happens with your device during or after the process then Droidopinions.com will not be held responsible. If your device is rooted then it will lose root after the process. The lollipop firmware here is official.

Necessary Instructions before Proceeding

  1. Check the model of your phone by going to Settings>>About Phone>>Hardware Information. Make sure it is D855 then proceed.
  2. Must backup your important data like photos, videos, contacts, messages etc to avoid data loss for safety purpose.
  3. Charge your phone up to 70% to minimize power issues.
  4. LG USB drivers should be installed on your PC.
  5. Your USB Data cable should be working properly.

Download Required Files

You will need the following files to downgrade LG G3.

Download: Lollipop KDZ file for G3 D855

Download: LGUP Tool

Download: LG Mobile Drivers

Downgrade LG G3 D855, Steps

A PC will be required for the operation below.

Step-1

  • Fist of all open the above link to download Lollipop KDZ for LG G3 D855. Click on the United Kingdom folder and from there download the KDZ file on the 5th number i,e UK Europe General D85520I.kdz or you can also download any other lollipop file. Just be sure to download the file with date before 2016 (30B is marshmallow).
  • Now extract the downloaded file if possible to get KDZ. If it’s already KDZ then don’t need to extract.

Step-2

  • Now download LGUP flash tool on your PC and extract.
  • You will get two different files after extracting LGUP. Install dll file first and then LGUP file.

Step-3

  • After installing LGUP, launch the LGUP flash tool on your PC.

Step-4

  • Connect your LG G3 to the PC. LGUP will detect your phone and it will be listed on the LGUP screen. (Example picture below)

 

Step-5

  • After that, click on the Upgrade option, and choose file path. Select the KDZ file that you downloaded in the first step.
  • You can also select Refurbish option and click on start but this will erase your data and you will undergo a clean downgrade process. This one is most suitable but you can select any option you want. Both works fine.

Note: Make sure BIN File is checked/ticked

Step-6

  • Now after all the above steps are done, press the Start button to begin the process and wait till the installation of the firmware completes.

After the completion of the process your LG G3 will automatically restart. It will take a little at first start-up to show up the homescreen so have patience. Now you have successfully downgraded your LG G3 to Lollipop. Hope you like our tutorial to downgrade LG G3 D855 to Lollipop. If you have questions or problem then ask in the comments sections below. Share this tutorial as much as possible so marshmallow users who want to downgrade LG G3 back to Lollipop could do this. Thanks for following guys, Bye!!

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74 COMMENTS

  2. hi Ahmed

    there are a lot of files for Lollipop KDZ file for G3 D855. Which exactly install file need to be downloaded for english version?

  4. Hello Faiq Ahmed, I’m from Portugal and I had Lollipop 5.0 on my LG G3 D855 and upgraded to Marshmallow 6.0
    I wanted to downgrade it again to 5.0 but what you say here it’s Lollipop 5.1.1
    Is it the same thing? 5.1.1 and 5.0?
    Cause I’m in Portugal, does this works for me and be able to choose Portuguese language?
    Sorry for all the questions. Thanks

  5. heyy, my flash tool doesnt detect my phone lg g3. he said “there is no handset connected, please connect a handset.”

  6. I do all of that u said but after i finish the mobile dont open just boot loop on lg homescreen i try to hard reset but nothing happen..any solution?

  11. I am using LG G3 D851
    I also had 6.0 marshmallow on my device and after this after it battery drains too fast it shut down automatically and start rebooting and only works when plug in to charger 🙁 . I am having much trouble . How can I fix this ? Do this downgrade will work on my device ?

  14. Dear Faiq Ahmed,

    my lg g3 model D855 i updated 4.4.2 kitkat to MM after update no-signals, no-Wi-Fi, No-Bluetooth and my hardware version is now D855V. i want go back my custom ROM. is possible to downgrade 4.4.2 kitkat or first downgrade to Lollipop than custom rom? please help me

    Thanks

  15. Thank U very much man, I was trying to downgrade my phone from MM to lollipop, i tried many methods and finally This worked. I owe u big time dude

  16. unknown !!!
    you have to select a known model, please.
    1. install lg driver
    2. install LGUP_8994_DLL_Ver_0_0_3_23
    3. LGUP_Install_Ver_1_14_3

    help me

  20. I have an LG G3. Type is LG D851. Since update to marshmallow my handsfree to my car is gone. I can play audio through radio from phone no problem.
    .
    I’ve done everything including the dreaded Factory Reset. Phone unpaired and removed from vehicle before reset.
    .
    Still no audio. Phone seems to connect but total silence, not even phone ringing..
    .
    Any help is appreciated!

  21. i am using LG g3 d858HK, upgraded to marshmallo 6.0.
    having some issue with IMO vedio calling, its not clear vedio..i checked using other vedio calling apps like skype and other..there it fine.
    Becoz of it i want downgrade to my mobile from 6.0 to lollipop.
    But i couldnt do it as u said..please help to downgrade my LG g3 d858hk. I will be very thankful for you support.

  22. And Forgot to say, thousand thank you Faiq Ahmed, this post help me alot, will update here if 5.0 fix the issues at 6.0. Just on my phone and it’s 5.0 =D, happy.

  23. Hi, just tried your way to flash my sucks 6.0 G3. LGUP_8974_DLL_Ver_0_5.MSI work for me, your LGUP_8994_DLL_Ver_0_0_3_23.msi file not suitable and showing unknown model in LGUP. My phone is D855 32gb version bought from HK.
    Hope this downgrade can fix my issues at 6.0 as below:
    1. Battery drain super fast
    2. Auto shut down when your phone battery below 40%, and then showing 0% battery.
    3. Auto shut down if you on wifi + gps while using gps based apps like Waze or Pokemon Go.
    4. Infinity loop and force me to buy a new battery.
    5. Overheating while using data and apps.

  24. Tried this on a LG G3 that I have upgraded to Marshmallow. It is the D855 version but when I start the LGUP it doesn’t identify my phone and I cannot proceed. Any ideas what to do?

  26. hi im using lg g3 f400l korean Android 6.0 will this instructions work on my device? cause i want to downgrade to 5.0 thankz

  27. hello frinds, i am just asking if that gonna work for my D855_30d it’s a United Arab Emirate carrier version.

  28. Hello,,I recently upgrade my lg g3 to 6.0 but the battery drain so fast..if I active at using it,, it’s just last for 2-4 hour..
    If I downgrade my phone to 5.0 would it solve the problem??
    Or should I downgrade it back to 4.4.1..?
    I really need help ????

  31. Hello. My lg g3 got sort brick while install multirom in my bevice . I can install original firmwares of lg g3 .but I can able install cm base ROM or AOKP /AOSP Roms .My device is showing as androidnet serial USB port which is one the mejor problems in soft brick . I search on web so may time to get overcome from that problem .But I can’t fine solution . Can you tell Can I install or downgrade my lg g3 without PC .it is possible to install original firmware with twrp or download mode. Please guide me .

  32. ME FROM INDIA
    LG D855 ANDRIOD 6.0
    KERNAL VERSION : 3.4.0
    SOFTWARE VERSION V30D-AME-XX
    WIFI DISABLE / BLUETOOH
    CAN NOT ON OR OFF
    CAN I DOWNGRADE TO LOLLYPOP
    hope after downgrade i will not lock my network mode
    pls support me i else this phone will be useless for me

      • thanks as you said
        LGUP D855 TOOL
        SELECTED OPTION UPGRADE
        SELECTED BIN FILE D85530C_00_0211.KDZ
        AND CLICKING ON START
        HOPE ABOVE OPTION IS RIGHT AND I WILL BACK TO ANDRIOD 5 WHERE MY WIFI AND BLUETOOH WILL START WORKING WITH CURRENT INDIAN NETWORK

  33. !! HELP !!
    i just tried this tutorial on my LG G3 D855P, and its worked fine, until the frimware update has completed and the phone restart, i got the LG screen and nothing else…
    !! HEELP !!

  37. My 850 is unlocked and on straighttalk. If i do a factory reset, will that take me back to kitkat and then upgrade to lollipop?

    • Hi,
      Resetting your phone will not take you bacK. You will remain at the same firmware. Only your phone will be restored to default factory settings.
      For downgrading to lollipop you should follow the instructions.

  38. Hi bro im current using my local verion lg g3 d855. can this be applicable to me as well? wont it be locked to any other countries ?

  39. when i connect my phone to pc the lgup tool not working saying u have to select known model please and there is no list of any other models mine detected is model COM-5 d8553
    Help please

  40. Dear Faiq Ahmed,
    Thank you for the detailed tutorial and download links. I recently updated my LG G3 (T-Mobile)
    now my phone is useless. screen flickering then black off. please let me know the proper file to downgrade to version 5

  44. I’ve followed this tutorial bit by bit, is it normal that the led has been flashing blue and green while the screen is stuck on the operator menu (In my case it’s Orange but in case you don’t get what I am saying just imagine your screen was stuck on a Verizon logo that shows up when you power on the phone)
    for the past 40 minutes ?

    • This issue is normal. You should perform a factory reset from the recovery menu to solve this issue. Follow these instruction to solve stuck at boot screen problem.

  45. Will this work for LG-D852? (Is there an alternative solution if it won’t?) I don’t want to mess anything up but you expressly said to make sure the model matched.

    • The method is same but you will need a different kdz file for D852 model. Find the file here and rest of the instructions are same.

      • LG-D851 file appears to be available through that link too, so could you please tell me if the same method applies that you are using here for the LG-D855 and Rena used for the LG-D852?

        • I’m also trying to find a tutorial for model d851. My T-Mobile lg g3 not compatible with d855 but I hear you need lg flash tool 2014 to flash it back. Just don’t know which file or how it works.

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