[Guide] LG G4 Stock Firmware (Go Back to Stock) KDZ & TOT Method

whitewolf1608

Senior Member
Nov 15, 2014
196
8
0
32
Dear hyelton user

After receiving my smartphone LG G4 h815 from the site - where it was replaced

motherboard - this smartphone had already loaded Android MarshMallow 6.0 -

branded on the vodafone network. The Vodafone firmware was with the h81520I tip.

Here is a link to this firmware> https://www.mylgphones.com/vodafone-lg-g4-h815-software-update-h81520l.html

Problem with the message appearing>

https://photos.app.goo.gl/omZGjva2bhMYE48n9 appears from the moment

uploading to LG G4 h815 by LGUP of this Firmware>

https://lg-firmwares.com/downloads-file/15713/H81520p_00_0403.kdz

I am asking you with a very kind request for your technical support.

I am asking for advice on how to fix this problem, whether to upload the firmware again

Vodafone?
 

whitewolf1608

Senior Member
Nov 15, 2014
196
8
0
32
Here are all the current KDZ & TOT files for flashing Your G4 Back to Stock! This Guide includes 3 different methods. KDZ, TOT, and LGUP (Which flashes both KDZ & TOT files)
Will Be adding Firmwares as I get them, This guide applies to general ALL LG models including G2 and G Pro, G Flex, G3, G4,G5, Etc. .



NOTICE! - IF you download fails or does not download all the way USE A DOWNLOAD MANAGER!, Files that are usually over 1GB browsers have issues downloading them especially if you have a slow connection.


First Off Not Responsible if you flash the wrong one!!!!

Please read HERE if you plan on downgrading, WARNING downgrading some models will result in a perm brick! Mostly AT&T, T-Mobile, and Sprint models.


The Files are Hosted on my server for fast speeds! Most if not all NEEDED KDZ & TOT files are on my Server :)
1). Download all The Files Below!

KDZ & TOT Firmware Files; HERE

How to flash ROM KDZ Method
First off I`d like to THANK @quangnhut123 for making a new way & easy way to flash the KDZ Method!!:)
For Any Reason It does not work for you here is the OLD Hard KDZ Method
http://hunterspad.com/?page_id=33

The Files are Hosted on my server for fast speeds! Most if not all NEEDED KDZ files are on my Server :)
1). Download all The Files Below!

1) Firmware Files - Click HERE!
2) Download LG Drivers - LG Drivers Here - 10.9 Mb
2.1)Verizon Drivers (Verizon Only)LG_VZW - 7.8 Mb

3) Download LG Flash Tool 2014 tool and extract - LG_Flash_Tool_2014.zip - 3.1 Mb

4) Enter to Download Mode and plug USB into your PC

5) Run LGFlashTool2014.exe and do as following pictures :
(If you cannot run LGFlashTool2014.exe, please install Visual C++ Runtime Library) - Download HERE
Normal Flash: Flash ROM without losing any data. Only use this when you need to fix system error. Beware of boot loop when flashing ROM that differ from current ROM on your phone or MOD ROM.
CSE Flash: Choose this option when you need a fresh format. All data will be gone. It's suitable for upgrading or downgrading ROM or simply use this when you need to back to Stock.



No need to choose desired language, it automatically change to English as a default setting.


Wait until 100% to complete !

REMEMBER if you get Bootlooping after flashing perform a factory hard reset!
Instructions Here: https://support.t-mobile.com/docs/DOC-7590

_______________________________________________________________________________________________________________________________

2015 (updated with pictures) TOT Method!
RETURN TO STOCK TOT METHOD!, AT&T, T-Mobile, Sprint, Verizon, & a The few International TOT`s that are available

How to Flash YouTube Video:

1.Download Everything!
1.1)Download Both Stock Image & DLL File – Download Here
1.2)Download LG FlashTools V1.8 - Setup_LGFlashTool_1.8.1.1023.exe - 9.3 Mb
1.3)Download Drivers (Any LG Phone) - Here (Verizon Only) – Here
1.4)Megalock DLL File - Megalock.dll Download

Install:
2.Install LG Drviers
3.Install Flashtool (Don’t run it yet)
4.Extract the TOT file from the Zip
5.Copy MegaLock.dll file to C:\LG\LGFlashtool (This might be a hidden folder so enable "hidden folders". Replace the old MegaLock.dll file)
6.Power off your Device & or pull battery
7.Press and hold the Vol UP Key and plug in the USB cable to your phone you should now see “Firmware Update/Download Mode” and be in Download mode.

8.Open up Device Manger on your PC
8.1)Click on ports and double click LGEModem
8.2)Go to Port Settings Tab and click Advanced
8.3)Change COM Port to COM41 and click Okay.
8.4)After this you may need to rereboot your phone back into download mode.



9.Run LG Flashtool as Administrator
10.Select Manual Mode at the top
11.Click The DLL Box and choose the DLL file from Above meant for your device
12.Click the S/W box and select the firmware file with the .tot extension, Then Click OK when done.

13.Now Click the Yellow Arrow Button at the top left, The Firmware install will be triggered

14.You may need to unplug/replug phone before Firmware install will start (If it does nothing after clicking the yellow button

15. Should take anywhere between 4-8 Minutes, When its done your phone should reboot
16. After reboot you may be presented with a Factory reset screen, Just pull battery and put it back in and it should boot right up!
Do NOT Close the FlashTool Window during firmware update.

99% of the time FlashTool will FAIL after 85% anything after 85% is just your phone rebooting so your safe :)


_______________________________________________________________________________________________________________________________
2014 TOT Method (Old/Outdated) DO not use (Here for archiving)​
RETURN TO STOCK TOT Method! AT&T & Sprint Verzion & The Few International TOTs I have available Also T-Mobile Can be Flashed back this way if you are having issues!
Download
1. Download Both Stock Image File & DLL file - Download
2. LGFlashTools v1.8 - Setup_LGFlashTool_1.8.1.1023.exe - 9.3 Mb
3).Download Drivers (ANY LG Phone)- LGUnitedMobileDriver.exe
3.2) Download Drivers (Verizon Only) - LG_VZW_United_WHQL_v2.11.1.exe - 7.8 Mb
4.Megalock DLL File: Megalock.dll Download
Credit to @madmack for making most of this Guide for the G Pro Which also works on our G2!




_______________________________________________________________________________________________________________________________
Remember if you have bootloop or stuck on LG Logo after flashing make sure you FACTORY RESET!

Extra Important Info:
To Fix ANY Driver issues make sure you reboot your computer after removing and then re-install again, Also try different USB ports or USB cable or try another PC.
Also try this for any driver issues: http://forum.xda-developers.com/showpost.php?p=53313255&postcount=5400
Make sure your using a USB 2.0 port, USB 3.0 will not work (only works for 1% of users)

REMEMBER if you get Bootlooping after flashing perform a factory hard reset!
Instructions Here: https://support.t-mobile.com/docs/DOC-7590

My Links are ALWAYS hosted on MY servers for NO Downtime! If My site does NOT have what your looking for PM me or post what you want and I will try and get it for you:)
Feel Free to support me by helping with Server Costs and Coffee if you feel my work has helped you :) Thank you!


Hello Dear Userze hyealton. I am asking you with a very kind request for your support. I know that you do not already have LG G4 h815, but I hope you remember what files you need to upload or what you need to do to make the dowgrade from MM to LP go. I downloaded Lolipopa from this site>

https://lg-firmwares.com/lg-h815-firmwares/

https://lg-firmwares.com/downloads-file/7543/H81510B_00.kdz
 

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vakolebana

New member
May 21, 2019
2
0
0
hello, have verizon vs986 with software version VS9862BA, and have problem to use Hotspot with foreign sim card, as i understand need root and bootloader for install another hotspot.apk, for root and bootloader need degrade to stock firmware "Verizon VS98611A_06.kdz" i try method from this post and have
problems
1. I don't find DLL file in that site ( 1.1)Download Both Stock Image & DLL File – Download Here )
2. how to got ".tot" file :)

help please
 
Last edited:

LukeSlovian

Senior Member
Feb 19, 2019
71
5
0
Here are all the current KDZ & TOT files for flashing Your G4 Back to Stock! This Guide includes 3 different methods. KDZ, TOT, and LGUP (Which flashes both KDZ & TOT files)
Will Be adding Firmwares as I get them, This guide applies to general ALL LG models including G2 and G Pro, G Flex, G3, G4,G5, Etc. .



NOTICE! - IF you download fails or does not download all the way USE A DOWNLOAD MANAGER!, Files that are usually over 1GB browsers have issues downloading them especially if you have a slow connection.


First Off Not Responsible if you flash the wrong one!!!!

Please read HERE if you plan on downgrading, WARNING downgrading some models will result in a perm brick! Mostly AT&T, T-Mobile, and Sprint models.


The Files are Hosted on my server for fast speeds! Most if not all NEEDED KDZ & TOT files are on my Server :)
1). Download all The Files Below!

KDZ & TOT Firmware Files; HERE

How to flash ROM KDZ Method
First off I`d like to THANK @quangnhut123 for making a new way & easy way to flash the KDZ Method!!:)
For Any Reason It does not work for you here is the OLD Hard KDZ Method
http://hunterspad.com/?page_id=33

The Files are Hosted on my server for fast speeds! Most if not all NEEDED KDZ files are on my Server :)
1). Download all The Files Below!

1) Firmware Files - Click HERE!
2) Download LG Drivers - LG Drivers Here - 10.9 Mb
2.1)Verizon Drivers (Verizon Only)LG_VZW - 7.8 Mb

3) Download LG Flash Tool 2014 tool and extract - LG_Flash_Tool_2014.zip - 3.1 Mb

4) Enter to Download Mode and plug USB into your PC

5) Run LGFlashTool2014.exe and do as following pictures :
(If you cannot run LGFlashTool2014.exe, please install Visual C++ Runtime Library) - Download HERE
Normal Flash: Flash ROM without losing any data. Only use this when you need to fix system error. Beware of boot loop when flashing ROM that differ from current ROM on your phone or MOD ROM.
CSE Flash: Choose this option when you need a fresh format. All data will be gone. It's suitable for upgrading or downgrading ROM or simply use this when you need to back to Stock.



No need to choose desired language, it automatically change to English as a default setting.


Wait until 100% to complete !

REMEMBER if you get Bootlooping after flashing perform a factory hard reset!
Instructions Here: https://support.t-mobile.com/docs/DOC-7590

_______________________________________________________________________________________________________________________________

2015 (updated with pictures) TOT Method!
RETURN TO STOCK TOT METHOD!, AT&T, T-Mobile, Sprint, Verizon, & a The few International TOT`s that are available

How to Flash YouTube Video:

1.Download Everything!
1.1)Download Both Stock Image & DLL File – Download Here
1.2)Download LG FlashTools V1.8 - Setup_LGFlashTool_1.8.1.1023.exe - 9.3 Mb
1.3)Download Drivers (Any LG Phone) - Here (Verizon Only) – Here
1.4)Megalock DLL File - Megalock.dll Download

Install:
2.Install LG Drviers
3.Install Flashtool (Don’t run it yet)
4.Extract the TOT file from the Zip
5.Copy MegaLock.dll file to C:\LG\LGFlashtool (This might be a hidden folder so enable "hidden folders". Replace the old MegaLock.dll file)
6.Power off your Device & or pull battery
7.Press and hold the Vol UP Key and plug in the USB cable to your phone you should now see “Firmware Update/Download Mode” and be in Download mode.

8.Open up Device Manger on your PC
8.1)Click on ports and double click LGEModem
8.2)Go to Port Settings Tab and click Advanced
8.3)Change COM Port to COM41 and click Okay.
8.4)After this you may need to rereboot your phone back into download mode.



9.Run LG Flashtool as Administrator
10.Select Manual Mode at the top
11.Click The DLL Box and choose the DLL file from Above meant for your device
12.Click the S/W box and select the firmware file with the .tot extension, Then Click OK when done.

13.Now Click the Yellow Arrow Button at the top left, The Firmware install will be triggered

14.You may need to unplug/replug phone before Firmware install will start (If it does nothing after clicking the yellow button

15. Should take anywhere between 4-8 Minutes, When its done your phone should reboot
16. After reboot you may be presented with a Factory reset screen, Just pull battery and put it back in and it should boot right up!
Do NOT Close the FlashTool Window during firmware update.

99% of the time FlashTool will FAIL after 85% anything after 85% is just your phone rebooting so your safe :)


_______________________________________________________________________________________________________________________________
2014 TOT Method (Old/Outdated) DO not use (Here for archiving)​
RETURN TO STOCK TOT Method! AT&T & Sprint Verzion & The Few International TOTs I have available Also T-Mobile Can be Flashed back this way if you are having issues!
Download
1. Download Both Stock Image File & DLL file - Download
2. LGFlashTools v1.8 - Setup_LGFlashTool_1.8.1.1023.exe - 9.3 Mb
3).Download Drivers (ANY LG Phone)- LGUnitedMobileDriver.exe
3.2) Download Drivers (Verizon Only) - LG_VZW_United_WHQL_v2.11.1.exe - 7.8 Mb
4.Megalock DLL File: Megalock.dll Download
Credit to @madmack for making most of this Guide for the G Pro Which also works on our G2!




_______________________________________________________________________________________________________________________________
Remember if you have bootloop or stuck on LG Logo after flashing make sure you FACTORY RESET!

Extra Important Info:
To Fix ANY Driver issues make sure you reboot your computer after removing and then re-install again, Also try different USB ports or USB cable or try another PC.
Also try this for any driver issues: http://forum.xda-developers.com/showpost.php?p=53313255&postcount=5400
Make sure your using a USB 2.0 port, USB 3.0 will not work (only works for 1% of users)

REMEMBER if you get Bootlooping after flashing perform a factory hard reset!
Instructions Here: https://support.t-mobile.com/docs/DOC-7590

My Links are ALWAYS hosted on MY servers for NO Downtime! If My site does NOT have what your looking for PM me or post what you want and I will try and get it for you:)
Feel Free to support me by helping with Server Costs and Coffee if you feel my work has helped you :) Thank you!


Thank You :)
 
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DarkBader

Member
Dec 17, 2019
14
2
0
--->Useful Data regarding error "Conexion to server failed", "Contact system administrator" and bar in 0% without moving:
.
.
I had the former problem when using the LG Tool G4 (LG UP saw my phone as "unknown") for flashing stock rom LL 5.0.2, in my LG G4 H635.
It seemed to be a problem with a wrong KDZ file.
Downloaded a new one here: for my model:
https://www.mylgphones.com/lg-g-stylo-stock-kdz-firmwarwe-h631ms631h630h635.html
Did factory reset, entered download mode, opened LG Tool as Admin, selected LGE Flashing, and had same message "Conexion to server..", BUT THIS TIME, IN BACKGROUND, THE DEVICE WAS BEING FLASHED.
.
Finished smoothly :)
 

Lotus1922

Member
Nov 27, 2018
11
0
0
LGUP Error Code 0x2000?

I have an H815T that I am trying to flash back to stock with 20g KDZ via LGUP. Phone is in download mode and recognized by LGUP. I navigate to the KDZ file, check "Refurbish" and "BIN file", and press start. The progress bar goes to 9% and then gives an error message "Error Code 0x2000 Flashing Fail". What am I doing wrong? :(:(