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

[Spaceboy60]

Hi!
Follow the OP instructions.

It should work

Don't see anything with regards to copying a separate dll to the LGUP directory that was pointed out by another user. Anyhow downloaded that and is working now.

 

[preslavchooo]

Hello !

I have successful flash my H810 and I'm still getting boot loop but now is a little bit different (see my video).

https://photos.app.goo.gl/a4Fj4JtQeY4ssduWA

 

[hyelton]

Hello !

I have successful flash my H810 and I'm still getting boot loop but now is a little bit different (see my video).

https://photos.app.goo.gl/a4Fj4JtQeY4ssduWA

Did you perform a factory reset?

Wait what do you mean you still got bootloop? Did you have bootloop before? If so that’s hardware failure.

What was the reason you flashed in the first place?


Sent from my iPhone using Tapatalk

 

[preslavchooo]

Did you perform a factory reset?

Wait what do you mean you still got bootloop? Did you have bootloop before? If so that’s hardware failure.

What was the reason you flashed in the first place?


Sent from my iPhone using Tapatalk

Yes, I have tried a factory reset after flashing, but result is the same.

The reason for the flash was that the phone has got an software update and during update applications screen every time the phone was restarted in random point. So I decided to go back to stock. And right now I'm stuck in bootloop.

 

[hyelton]

Yes, I have tried a factory reset after flashing, but result is the same.



The reason for the flash was that the phone has got an software update and during update applications screen every time the phone was restarted in random point. So I decided to go back to stock. And right now I'm stuck in bootloop.

Sounds like hardware failure. If there’s hardware problems and you update and get reboots and things like security under options not working etc only fix is warranty or board replacement.


Sent from my iPhone using Tapatalk

 

[preslavchooo]

Sounds like hardware failure. If there’s hardware problems and you update and get reboots and things like security under options not working etc only fix is warranty or board replacement.


Sent from my iPhone using Tapatalk

Right now I have successful flash with LGH810AT-01-V21y-310-410-JUN-20-2016-ARB03+0 and there is no bootloop, but I got stuck on LG logo.

 

[youuungster]

Right now I have successful flash with LGH810AT-01-V21y-310-410-JUN-20-2016-ARB03+0 and there is no bootloop, but I got stuck on LG logo.

i did everythin in the tuto but it still says " connexion failed to server"
i have the lG G4 F500L

 

[hyelton]

i did everythin in the tuto but it still says " connexion failed to server"

i have the lG G4 F500L

But It’s supposed to say that.... you drag the window out of the way and if everything is correct it’s should be flashing.



Now if your running MM 6.0 or above you must use LGUP




Sent from my iPhone using Tapatalk

 

[youuungster]

But It’s supposed to say that.... you drag the window out of the way and if everything is correct it’s should be flashing.



Now if your running MM 6.0 or above you must use LGUP




Sent from my iPhone using Tapatalk

when i'm about to use the LGUP it wont recognize my phone even with all the drivers and updates installed

 

[whitewolf1608]

Hello, I turn to a very kind request for technical support.

I currently have a problem with my LG G4 h815.

The last system that was in my LG G4 h815 is Android Nugat 7.0 29a Rom

> https://forum.xda-developers.com/g4/development/h815-nougat-stock-t3659860

After uploading this Rom I had a serious problem with the number of imei.

Just after entering the menu, the status of imei shows null.

There is no IMEI number.

Just not displaying the IMEI number would not be a problem if it was possible to enter

in recovery TWRP.

In addition to the fact that the samrtphone lost its IMEI number, it also lost TWRP Recovery.

There were no changes to TWRP from the combination of the Power and Volume keys -

By the official TWRP application that I installed with Android Nugat
7.0 29a Rom also did not go to reboot smarphone for TWRP Recovery because
Root rooting was required.

So I decided to try to install the software through the tool

LGUP.

One after downloading the Software from this site

> http://storagecow.eu/index.php?dir=Xda/LG+G4/

Poland H81510E.kdz with a 25% progress of uploading a message appears to me

> https://photos.app.goo.gl/fMiNHCuifkZjsbas6

When you try to use LG Flash Toll 1.8.1.1023, the Wrong DLL file appears.

> https://photos.app.goo.gl/ag1cqC948Ba8a9TD6

By the LG MOBILE SUPPORT TOOL tool, I can not currently perform the Firmeware upload attempt - because the application claims that the phone is badly connected. My LG G4 h815 is currently only running into the Firmeware Update mode. Please help

Sincerely whitewolf1608

 

[hyelton]

Hello, I turn to a very kind request for technical support.

I currently have a problem with my LG G4 h815.

The last system that was in my LG G4 h815 is Android Nugat 7.0 29a Rom

> https://forum.xda-developers.com/g4/development/h815-nougat-stock-t3659860

After uploading this Rom I had a serious problem with the number of imei.

Just after entering the menu, the status of imei shows null.

There is no IMEI number.

Just not displaying the IMEI number would not be a problem if it was possible to enter

in recovery TWRP.

In addition to the fact that the samrtphone lost its IMEI number, it also lost TWRP Recovery.

There were no changes to TWRP from the combination of the Power and Volume keys -

By the official TWRP application that I installed with Android Nugat
7.0 29a Rom also did not go to reboot smarphone for TWRP Recovery because
Root rooting was required.

So I decided to try to install the software through the tool

LGUP.

One after downloading the Software from this site

> http://storagecow.eu/index.php?dir=Xda/LG+G4/

Poland H81510E.kdz with a 25% progress of uploading a message appears to me

> https://photos.app.goo.gl/fMiNHCuifkZjsbas6

When you try to use LG Flash Toll 1.8.1.1023, the Wrong DLL file appears.

> https://photos.app.goo.gl/ag1cqC948Ba8a9TD6

By the LG MOBILE SUPPORT TOOL tool, I can not currently perform the Firmeware upload attempt - because the application claims that the phone is badly connected. My LG G4 h815 is currently only running into the Firmeware Update mode. Please help

Sincerely whitewolf1608

As I’ve said in the private messages. It really seems like you don’t have an H815. And you really need to take a look on the back of the motherboard... as loss of imei is usually due to flashing wrong model firmware.


Did the phone work fine before the update? Or did you update cause there was an issue? If the latter it’s hardware related.


Sent from my iPhone using Tapatalk

 

[RuedasLocas]

Hello, I turn to a very kind request for technical support.

I currently have a problem with my LG G4 h815.

The last system that was in my LG G4 h815 is Android Nugat 7.0 29a Rom

> https://forum.xda-developers.com/g4/development/h815-nougat-stock-t3659860

After uploading this Rom I had a serious problem with the number of imei.

Just after entering the menu, the status of imei shows null.

There is no IMEI number.

Just not displaying the IMEI number would not be a problem if it was possible to enter

in recovery TWRP.

In addition to the fact that the samrtphone lost its IMEI number, it also lost TWRP Recovery.

There were no changes to TWRP from the combination of the Power and Volume keys -

By the official TWRP application that I installed with Android Nugat
7.0 29a Rom also did not go to reboot smarphone for TWRP Recovery because
Root rooting was required.

So I decided to try to install the software through the tool

LGUP.

One after downloading the Software from this site

> http://storagecow.eu/index.php?dir=Xda/LG+G4/

Poland H81510E.kdz with a 25% progress of uploading a message appears to me

> https://photos.app.goo.gl/fMiNHCuifkZjsbas6

When you try to use LG Flash Toll 1.8.1.1023, the Wrong DLL file appears.

> https://photos.app.goo.gl/ag1cqC948Ba8a9TD6

By the LG MOBILE SUPPORT TOOL tool, I can not currently perform the Firmeware upload attempt - because the application claims that the phone is badly connected. My LG G4 h815 is currently only running into the Firmeware Update mode. Please help

Sincerely whitewolf1608

If you were in Nougat, the only way out is flashing v20p (at least on mine). After that you can flash the v10e.kdz.

 

[whitewolf1608]

As I’ve said in the private messages. It really seems like you don’t have an H815. And you really need to take a look on the back of the motherboard... as loss of imei is usually due to flashing wrong model firmware.


Did the phone work fine before the update? Or did you update cause there was an issue? If the latter it’s hardware related.


Sent from my iPhone using Tapatalk

Yes phone before uploading this Rom

> https://forum.xda-developers.com/g4/development/h815-nougat-stock-t3659860/page88

He worked correctly on this Rom

> https://forum.xda-developers.com/g4/development/rom-simplegx-rom-v1-0-29-jan-t3547009

Please help me which software should I download now and which tool should I upload?

---------- Post added at 07:46 PM ---------- Previous post was at 07:43 PM ----------

If you were in Nougat, the only way out is flashing v20p (at least on mine). After that you can flash the v10e.kdz.

Ok, I understand in that case, give a link to the version with kdz or TOT for Android Nougat.

---------- Post added at 07:47 PM ---------- Previous post was at 07:46 PM ----------

If you were in Nougat, the only way out is flashing v20p (at least on mine). After that you can flash the v10e.kdz.

Through which tool should I upload the software? I am asking for advice.

 

[ThatPcGuy]

Yes phone before uploading this Rom

> https://forum.xda-developers.com/g4/development/h815-nougat-stock-t3659860/page88

He worked correctly on this Rom

> https://forum.xda-developers.com/g4/development/rom-simplegx-rom-v1-0-29-jan-t3547009

Please help me which software should I download now and which tool should I upload?

---------- Post added at 07:46 PM ---------- Previous post was at 07:43 PM ----------



Ok, I understand in that case, give a link to the version with kdz or TOT for Android Nougat.

---------- Post added at 07:47 PM ---------- Previous post was at 07:46 PM ----------



Through which tool should I upload the software? I am asking for advice.

Hello, do you know your IMEI number before this happened? If not, don't worry, take the battery out and the label behind should have the number on it. Write it down. Then get this (choose the int version): https://www.androidsage.com/2017/07...-nougat-firmware-update-download-and-install/. Then install the 'LG flash tool 2016' (search it up). Then:
Step 1: Put your phone into Download Mode. To do this, Power Off your phone and while pressing both the volume keys connect your phone to your PC via USB cable. The screen will show download mode icon. Let drivers be installed on the PC. If it fails for first time repeat the process (try holding just the Volume Up key).
Step 2: Open the LG Flash Tool 2014 folder and copy the KDZ file in it. If the Flashtool is compressed, extract it to get a folder containing the necessary files including the LGFlashtool2014.exe file. Transfer the H815xxx_00.kdz file, you have just downloaded, into the LG Flash Tool 2014 folder.
Step 3: Run LGFlashtool2014.exe file.
Step 4: Now you will have to make a bunch of selections. Select Type: CDMA (Do not worry about selecting this option as Flashtool is modified only for devices with SIM). Change PhoneMode to CS_EMERGENCY. Click the folder icon to browse your computer and select the H815xxx_00.kdz file.
Step 5: Choose CSE Flash option as we are installing a new copy on the stock firmware. This will format all your application data, format your system and could also wipe your internal storage. It makes a clean install. If you choose this method, it is highly recommended that you backup all your apps and data first. (Normal Flash option should be selected if you are on stock firmware and you just want to upgrade and do not want to lose any data. However, make sure you have not modified your system.)
Step 6: Once selected, choose Start on next window.
Step 7: Select your Region and Language and select OK button. Also clear phone for update registry.
Step 8: Once the program has started, the stock firmware will get installed.
I hope this works for you.

 

[whitewolf1608]

Hello, do you know your IMEI number before this happened? If not, don't worry, take the battery out and the label behind should have the number on it. Write it down. Then get this (choose the int version): https://www.androidsage.com/2017/07...-nougat-firmware-update-download-and-install/. Then install the 'LG flash tool 2016' (search it up). Then:
Step 1: Put your phone into Download Mode. To do this, Power Off your phone and while pressing both the volume keys connect your phone to your PC via USB cable. The screen will show download mode icon. Let drivers be installed on the PC. If it fails for first time repeat the process (try holding just the Volume Up key).
Step 2: Open the LG Flash Tool 2014 folder and copy the KDZ file in it. If the Flashtool is compressed, extract it to get a folder containing the necessary files including the LGFlashtool2014.exe file. Transfer the H815xxx_00.kdz file, you have just downloaded, into the LG Flash Tool 2014 folder.
Step 3: Run LGFlashtool2014.exe file.
Step 4: Now you will have to make a bunch of selections. Select Type: CDMA (Do not worry about selecting this option as Flashtool is modified only for devices with SIM). Change PhoneMode to CS_EMERGENCY. Click the folder icon to browse your computer and select the H815xxx_00.kdz file.
Step 5: Choose CSE Flash option as we are installing a new copy on the stock firmware. This will format all your application data, format your system and could also wipe your internal storage. It makes a clean install. If you choose this method, it is highly recommended that you backup all your apps and data first. (Normal Flash option should be selected if you are on stock firmware and you just want to upgrade and do not want to lose any data. However, make sure you have not modified your system.)
Step 6: Once selected, choose Start on next window.
Step 7: Select your Region and Language and select OK button. Also clear phone for update registry.
Step 8: Once the program has started, the stock firmware will get installed.
I hope this works for you.

Hello, I am addressing You with a very courteous request for your technical support for LG G4 h815 I need to block Bootlader by this method
https://www.youtube.com/watch?v=Tr6E9LaGWRs
I am asking for detailed info if I download Android MrshMallow
with smartphone recovery TWRP and Root Super SU?
I urgently need a downgrade to do Android Lolipop and later possibly to
KitKat 4.4.
So please link to the available Firmeware with the KDZ or DZ file extension.

So that LG Flash Toll or LGUP read the contents of Firmeware correctly.

 

[GetaMac420 XDA]

THANKS for SAVING my G4 H636 (Canada)

I tried everything, LGBridge, LGUP, UPPERCUT, and finally your flash worked, there has been a KDZ available for a long time for this model, but I could not get the other mentioned solutions to recognize the model.
The kdz H6310M_00_0609.KDZ
AND
Your flash tool took my G4 out of a bootloop error that progressed into a failed update, So the device was stuck in the update mode when commanding the download. Also only LG airdrive would show on PC.

T H A N K Y O U
MY G4 IS NOW
A L I V E A G A I N

 

[ThatPcGuy]

Hello, I am addressing You with a very courteous request for your technical support for LG G4 h815 I need to block Bootlader by this method
https://www.youtube.com/watch?v=Tr6E9LaGWRs
I am asking for detailed info if I download Android MrshMallow
with smartphone recovery TWRP and Root Super SU?
I urgently need a downgrade to do Android Lolipop and later possibly to
KitKat 4.4.
So please link to the available Firmeware with the KDZ or DZ file extension.

So that LG Flash Toll or LGUP read the contents of Firmeware correctly.

Hi again,
If you want to lock your bootloader again, then just put it in fastboot mode via adb and then type in: 'fastboot getvar unlocked'. It should come up with yes for unlocked. Then you just do: 'fastboot oem lock' (this will erase everything) and it should lock it. In some cases it will brick your phone so do it at your own risk. Also, here is the firmware: https://forum.xda-developers.com/g4/general/kdz-tot-lg-g4-variants-t3362423 .

 

[whitewolf1608]

Hi again,
If you want to lock your bootloader again, then just put it in fastboot mode via adb and then type in: 'fastboot getvar unlocked'. It should come up with yes for unlocked. Then you just do: 'fastboot oem lock' (this will erase everything) and it should lock it. In some cases it will brick your phone so do it at your own risk. Also, here is the firmware: https://forum.xda-developers.com/g4/general/kdz-tot-lg-g4-variants-t3362423 .

Hello, Dear ThePiguy user

We ask you with a very courteous request for your technical support

Please, send me a compatible version of the drivers in response to my post

LGMobileDriver_WHQL_Ver_x.x.x for LG G4 h815 - the version that will allow

for making Downgrade Firmeware Android MarshMallow for Android Lolipop

and from Lolipop to Android KitKat.

---------- Post added at 01:37 PM ---------- Previous post was at 01:35 PM ----------

Hi again,
If you want to lock your bootloader again, then just put it in fastboot mode via adb and then type in: 'fastboot getvar unlocked'. It should come up with yes for unlocked. Then you just do: 'fastboot oem lock' (this will erase everything) and it should lock it. In some cases it will brick your phone so do it at your own risk. Also, here is the firmware: https://forum.xda-developers.com/g4/general/kdz-tot-lg-g4-variants-t3362423 .

Is the latest version of LGMobileDriver_WHQL_Ver_4.2.0.exe drivers - it is a stable version and if this version has any components from previous versions
LGMobileDriver_WHQL drivers?

---------- Post added at 01:44 PM ---------- Previous post was at 01:37 PM ----------

Hello Dear Forum Users, I am asking you with a very kind request for support for the implementation of Downgrade Firmeware Android MarshMallow for lolipop and Android Lolipop for Android KitKat. Please, kindly support me based on this video guide.

https://www.youtube.com/watch?v=vJfjKosgHJQ&t=236s

---------- Post added at 01:50 PM ---------- Previous post was at 01:44 PM ----------

For the LG G3 there is a guide made and this page from the firmware is also presented

> https://www.youtube.com/watch?v=OGdpPG2BHPQ&t=184s

> http://storagecow.eu/index.php?dir=Xda/

 

[ThatPcGuy]

Hello, Dear ThePiguy user

We ask you with a very courteous request for your technical support

Please, send me a compatible version of the drivers in response to my post

LGMobileDriver_WHQL_Ver_x.x.x for LG G4 h815 - the version that will allow

for making Downgrade Firmeware Android MarshMallow for Android Lolipop

and from Lolipop to Android KitKat.

---------- Post added at 01:37 PM ---------- Previous post was at 01:35 PM ----------



Is the latest version of LGMobileDriver_WHQL_Ver_4.2.0.exe drivers - it is a stable version and if this version has any components from previous versions
LGMobileDriver_WHQL drivers?

---------- Post added at 01:44 PM ---------- Previous post was at 01:37 PM ----------

Hello Dear Forum Users, I am asking you with a very kind request for support for the implementation of Downgrade Firmeware Android MarshMallow for lolipop and Android Lolipop for Android KitKat. Please, kindly support me based on this video guide.

https://www.youtube.com/watch?v=vJfjKosgHJQ&t=236s

---------- Post added at 01:50 PM ---------- Previous post was at 01:44 PM ----------

For the LG G3 there is a guide made and this page from the firmware is also presented

> https://www.youtube.com/watch?v=OGdpPG2BHPQ&t=184s

> http://storagecow.eu/index.php?dir=Xda/

Just download the dirvers here: https://www.lg.com/uk/support/support-mobile/lg-H815 .

 

[ThePiGuy]

Hello, Dear ThePiguy user

We ask you with a very courteous request for your technical support

Please, send me a compatible version of the drivers in response to my post

LGMobileDriver_WHQL_Ver_x.x.x for LG G4 h815 - the version that will allow

for making Downgrade Firmeware Android MarshMallow for Android Lolipop

and from Lolipop to Android KitKat.

---------- Post added at 01:37 PM ---------- Previous post was at 01:35 PM ----------



Is the latest version of LGMobileDriver_WHQL_Ver_4.2.0.exe drivers - it is a stable version and if this version has any components from previous versions
LGMobileDriver_WHQL drivers?

---------- Post added at 01:44 PM ---------- Previous post was at 01:37 PM ----------

Hello Dear Forum Users, I am asking you with a very kind request for support for the implementation of Downgrade Firmeware Android MarshMallow for lolipop and Android Lolipop for Android KitKat. Please, kindly support me based on this video guide.

&t=236s

---------- Post added at 01:50 PM ---------- Previous post was at 01:44 PM ----------

For the LG G3 there is a guide made and this page from the firmware is also presented

>

&t=184s

> http://storagecow.eu/index.php?dir=Xda/

Can I just point out that it's not me that's replying to you - it's @ThatPcGuy

P.S. The G4 was released with Lollipop so it cannot have KitKat installed