How to root D852 on MM? - G3 Q&A, Help & Troubleshooting

Hello all!
I've been looking and trying to root this LG G3 without any success.
It seems that LGUP must be used with a *.kdz to downgrade from MM to LP or KK. However, I can't find any *.kdz, only the *.tot.
I've also tried using LG Flash Tools, but because I'm on MM, it fails to recognize the device.
Also, Kingroot didn't work.
Any ideas?

Bump!

Bump!

Before starting take a backup of your files (if you want)
So let's go on..!
Go here and you will need to go to the folder with your devices model's name.
http://storagecow.eu/index.php?dir=Xda/LG+G3/Stock/
Then go over here
http://forum.xda-developers.com/showthread.php?t=2785089
And scroll down to "How to flash ROM kdz method"
Enable usb debugging
https://www.recovery-android.com/enable-usb-debugging-on-android.html#part1
Connect your phone to your PC
Download Lg drivers(Not Verizon one's!)
Download Lguptool, unzip it,open the folder and inside of it where all the lguptool files are located move the kdz file that you downloaded.
Open lguptool with admin prompt!
Select type CMDA and phone mode DIAG
Select the kdz file and click "CSE Flash"
Then click "start"
A menu will appear,select language and click "Ok"
After all these steps you will need to wait till the phone boots.
Then you will be able to root your phone and flash ROMs!
Good luck!
(A "thank you" would be really appreciated!)

Related

(fix) lg tool bug fix

Since the last update tool LGTool should we not also use the tool to flash KDZ as usual anymore. So we have to do it this way. Thanks @ Cloudyfa The Mod note KDZ update instructions for the box. @ blueberry chucvnvn @ @ gts8003 @ xuanduc89 ... Cloudyfa said :: ↑ faulty LG FlashTool You can try to do it this way:
1.Download file: http://www.androidfilehost.com/?fid=23329332407577839 Cloudyfa said :: ↑
2. Delete the folder C: \ ProgramData \ LGMOBILEAX folder and replace it with LGMOBILEAX extract from the file.
3. Open file Windows/System32/Drivers/etc/hosts with Admin rights. Add the following lines: Code:127.0.0.1 csmg.lgmobile.com
4. Download firmware update tool: http://www.androidfilehost.com/?fid=23329332407577842
5. Download Small HTTP
Server: http://www.androidfilehost.com/?fid=23329332407577847
6. Http.exe run before running LGFlashtool
7. Take steps up KDZ or TOT as normal or do. * 1 However, some anti-virus software will detect this soft mistaken, to allow it, and decided to spend it is up to you ok. Click to expand .. . SOURCE LG VIETNAM
How to modify the host file
1. Click Start -> All Programs -> Accessories
2. Right click Notepad and select Run as administrator
3. Click Continue on the "Windows needs your permission" UAC window.
4. When Notepad opens Click File -> Open
5. In the filename field type C:\Windows\System32\Drivers\etc\hosts
6. Click Open
I always get "Battery Level to Low" but my phone is even charged, dont know what i can do.
and when i use kdz_fw_upd i always get "extract file error"
Does someone knows what to do?
bricked my phone after updated my rooted e986 OTA. now i want to restore it back to stock.
Does the phone charge when it is in the cwm recovery?
Thanks bro! you are my life saver. Im deciding to go down to LG service centre tomorrow due to bad flash and now follow your steps, im able to restore back to factory!! Thanks again.
basicone1 said:
I always get "Battery Level to Low" but my phone is even charged, dont know what i can do.
and when i use kdz_fw_upd i always get "extract file error"
Does someone knows what to do?
bricked my phone after updated my rooted e986 OTA. now i want to restore it back to stock.
Does the phone charge when it is in the cwm recovery?
Click to expand...
Click to collapse
try uninstalling everything then install again everything or flash it using another computer
kongming said:
Thanks bro! you are my life saver. Im deciding to go down to LG service centre tomorrow due to bad flash and now follow your steps, im able to restore back to factory!! Thanks again.
Click to expand...
Click to collapse
no problem glad to help
Mr.Gabo said:
try uninstalling everything then install again everything or flash it using another computer
Click to expand...
Click to collapse
tried it on 3 different computers... so i dont think thats the problem
basicone1 said:
tried it on 3 different computers... so i dont think thats the problem
Click to expand...
Click to collapse
try flashing using tot file
I selected "cdma" at "select type" in the left corner of the R&D test tool window. Then the option CSE web upgrade test button appears, Clicked on this and no low battery warning this time. Phone is back to live (F240S)! Flashed the v20c 4.4.2 file for F240S.

Rooting LG H735 G4 Beat

hi, tried to search everywhere but to no avail soo far.. does anyone knows if there is an existing root guide for LG G4 Beat? its sort of a diff model but there's no sub for it so i guess ill put it at here since its still under G4 family.. :/
Do you have Android 5.0 or 5.1 installed?
First of all. Before you start to try root, download the kdz file for your phone.
The kdz is needed if something went wrong (e.g. phone not booting).
You can use the LG Flash Tool to flash the kdz to a bricked phone.
Use this link with your IMEI:
Code:
http://csmg.lgmobile.com:9002/csmg/b2c/client/auth_model_check2.jsp?esn=IMEI
If it works, please post the download link for the "kdz".
Or better post the output too, but delete your IMEI!
Your link will only work if you type:
csmgdl.lgmobile.com/dn/downloader.dev?fileKey=
and then add the rest of your url instead of the given link.
It's worth trying. You need to get a partition layout. Then @autoprime will give a full command to run in DL mode for dumping the system image, and flashing it once it's been injected with root. I can inject it for you once you have the system.img dump.
I wrote an guide how you can extract the GPT and calculate the dd parameters:
[How to] Determine dd Parameters For All LG G4 Models
http://forum.xda-developers.com/g4/h...lg-g4-t3184867
Do you know how to work with linux?
Please post the outputs of gdisk into a HIDE and CODE tag. Thank you.
Maybe you are a advanced user and can Inject root yourself with the autoroot.sh method (Inject_Root_G4.zip)?
Or do you need help?
I think you have Android 5.1.1 installed, so it is not possible to use Kingroot to root your device. Is that right?
dominik-p said:
I wrote an guide how you can extract the GPT and calculate the dd parameters:
[How to] Determine dd Parameters For All LG G4 Models
http://forum.xda-developers.com/g4/h...lg-g4-t3184867
Do you know how to work with linux?
Click to expand...
Click to collapse
Wow, thanks for that guide! I've been trying to figure out how to find the right dd params forever.
tabp0le said:
Wow, thanks for that guide! I've been trying to figure out how to find the right dd params forever.
Click to expand...
Click to collapse
Pleasure.
I think some people also knew how to do it, but no one wanted to write a guide.
AND ALWAYS CONSIDER:
You can brick your phone if you don't know what you are doing.
Backup your files before you change anything.
i think i got the link for the KDZ.. but when i
dominik-p said:
Do you have Android 5.0 or 5.1 installed?
First of all. Before you start to try root, download the kdz file for your phone.
The kdz is needed if something went wrong (e.g. phone not booting).
You can use the LG Flash Tool to flash the kdz to a bricked phone.
Use this link with your IMEI:
[CODEcsmg.lgmobile.com:9002/csmg/b2c/client/auth_model_check2.jsp?esn=IMEI[/CODE]
If it works, please post the download link for the "kdz".
Or better post the output too, but delete your IMEI!
Your link will only work if you type:
csmgdl.lgmobile.com/dn/downloader.dev?fileKey=
and then add the rest of your url instead of the given link.
Click to expand...
Click to collapse
ok i think i did it correctly.. heres the link
downloader.dev?fileKey=FWDEYI0132FMAUI263CCLO1/H73510b_00.kdz (had to cut it short cuz forum would not let me post new link :/ csmgdl.lgmobile.com/dn/ was before 'downloader')
heres the output file..
<response req_cmd="auth_model_check" status="OK">
<auth_model_check><result>OK</result>
<esn>-----MYIMEI----</esn>
<model>LGH735</model><suffix>ASEATS</suffix><msn>508KPUU032390</msn><esn_date/>
<sw_version>H73510B_00</sw_version>
<sw_url>fileKey=FWDEYI0132FMAUI263CCLO1/H73510b_00.kdz</sw_url> pkg03.lime.gdms.lge.com/dn/downloader.dev?
<sw_locale_url/><sw_recommand_uri/><app_version/><app_url/>
<cs_em_flag>N</cs_em_flag>
<cs_em_uri>N</cs_em_uri>
<chip_type>EG</chip_type>
<prod_type>2</prod_type>
<buyer>SEA</buyer>
<file_name>H73510b_00.kdz</file_name>
</auth_model_check></response>
and yes its 5.1..
would be nice if theres a step by step guide cuz last phone i tired rooting was prolly galaxy tab and it was wayy easier :/
Ok, well done. Is 10b the same version as currently installed on your device?
Some other details would be interesting:
Do you have an unbranded device?
Where did you buy it / where do you live? (country)
Are you an advanced user? Do you know how to work with linux?
The next steps will be:
Calculate your dd parameters and backup your system partition into a img file. Read my guide:
[How to] Determine dd Parameters For All LG G4 Models
http://forum.xda-developers.com/g4/h...lg-g4-t3184867
Please post the outputs of gdisk into a HIDE and CODE tag.
Post your calculated dd parameters, so that we can verify it.
IMPORTANT: Keep the original (unchanged) system.img on your computer (zip it).
Then:
Copy the img file to a linux system and mount it. Create a testfile (test.txt) on the mounted system partition.
Copy the img file back to your phone and try to "dd" it back over your system partition.
Check if you see the testfile on your system partition.
If that worked you have successfully overwritten your system partition.
Then:
Try to inject root with the Inject_Root_G4.zip on your linux system.
Copy the new img file to your phone and "dd" it over your system partition.
Please ask if you are not 100% sure what to do.
You are responsible for what you are doing with your device.
Backup all your data (photos, videos, messages...) before going one step further.
dominik-p said:
Ok, well done. Is 10b the same version as currently installed on your device?
Some other details would be interesting:
Do you have an unbranded device?
Where did you buy it / where do you live? (country)
Are you an advanced user? Do you know how to work with linux?
The next steps will be:
Calculate your dd parameters and backup your system partition into a img file. Read my guide:
[How to] Determine dd Parameters For All LG G4 Models
http://forum.xda-developers.com/g4/h...lg-g4-t3184867
Please post the outputs of gdisk into a HIDE and CODE tag.
Post your calculated dd parameters, so that we can verify it.
IMPORTANT: Keep the original (unchanged) system.img on your computer (zip it).
Then:
Copy the img file to a linux system and mount it. Create a testfile (test.txt) on the mounted system partition.
Copy the img file back to your phone and try to "dd" it back over your system partition.
Check if you see the testfile on your system partition.
If that worked you have successfully overwritten your system partition.
Then:
Try to inject root with the Inject_Root_G4.zip on your linux system.
Copy the new img file to your phone and "dd" it over your system partition.
Please ask if you are not 100% sure what to do.
You are responsible for what you are doing with your device.
Backup all your data (photos, videos, messages...) before going one step further.
Click to expand...
Click to collapse
what do u mean 10b?
not really unbranded i guess? its a mid-tier version of the LG G4.. this is the phone.. http://www.lg.com/sg/mobile-phones/lg-G4-Beat
dont think its out at the US yet
bought it at Singapore as i recontacted my phone
nope i dont know how to use linux and im %100 not sure what to do :crying:
Ok so you are not a advanced user?
10b is the version of the kdz file. Goto Settings->Phone info->software version on your phone and post your software version.
First of all: It is not possible to root your phone without linux!
You don't have to install a linux on your computer (physically) but at least in an virtual environment (virtualbox, vmware player) or as a live distribution.
What you can do without linux is try to extract the GPT.
Which OS is installed on your computer (Win 7, 8, 10)?
Download the LG_Root.zip from
http://forum.xda-developers.com/android/development/guide-root-method-lg-devices-t3049772
It contains the Send_Command.exe
You need this tool to open a special console when your phone is in download mode.
Do you know this tool and how to enter the download mode?
dominik-p said:
Ok so you are not a advanced user?
10b is the version of the kdz file. Goto Settings->Phone info->software version on your phone and post your software version.
First of all: It is not possible to root your phone without linux!
You don't have to install a linux on your computer (physically) but at least in an virtual environment or as a live distribution.
What you can do without linux is try to extract the GPT.
Which OS is installed on your computer (Win 7, 8, 10)?
Download the LG_Root.zip from
http://forum.xda-developers.com/android/development/guide-root-method-lg-devices-t3049772
It contains the Send_Command.exe
You need this tool to open a special console when your phone is in download mode.
Do you know this tool and how to enter the download mode?
Click to expand...
Click to collapse
no im not an advanced user..
its software version is : V10b-SEA-XX
so i guess its a 10b?
im using windows 7 right now
Yes you have 10b installed now.
The XX means that it is unbranded.
SEA means southeast asia.
Win 7 is fine. Send_Command will work.
Download the zip from the above-mentioned thread.
Then:
Power off your device
When the device is powered off, hold volume up and insert a USB cable connected to the PC
Wait for the drivers to install
Click to expand...
Click to collapse
and follow the steps 7-9.
dominik-p said:
Yes you have 10b installed now.
The XX means that it is unbranded.
SEA means southeast asia.
Win 7 is fine. Send_Command will work.
Download the zip from the above-mentioned thread.
Then:
and follow the steps 7-9.
Click to expand...
Click to collapse
so i just download it, put it at desktop and skip all the methods till 6-9? do i have to enable developer mode before doing it?
No you don't need developer mode.
But it is no problem if you enabled it.
Are you able to open the console with Send_Command.exe?
dominik-p said:
No you don't need developer mode.
But it is no problem if you enabled it.
Are you able to open the console with Send_Command.exe?
Click to expand...
Click to collapse
i opened send_command.exe but it just closes back.. mine is at COM1 but idk how to change it
Update: it says NOTE: Do not attempt this on devices with 5.1.1 , at the time this method was posted it worked on many firmware 5.0.2 should i still go for it? im using 5.1.1
We won't follow the guide. We will do it like here:
http://forum.xda-developers.com/g4/orig-development/root-tmo-vzw-intl-variants-soon-root-lg-t3164765
(You will also find the thread is linked there.)
The thread is just a good help for the Send_Command tool.
You don't have to change the COM port.
Are you in download mode? Do you see the "Firmware Update" screen?
Use the ports.bat and note the "netdiag" COM port.
Inside of LG_Root folder hold shift and right click a blank space you should see "Open command window here"
Click to expand...
Click to collapse
Then enter:
Code:
Send_Command.exe \\.\COM#
Replace # with your number.
dominik-p said:
We won't follow the guide. We will do it like here:
http://forum.xda-developers.com/g4/orig-development/root-tmo-vzw-intl-variants-soon-root-lg-t3164765
(You will also find the thread is linked there.)
The thread is just a good help for the Send_Command tool.
You don't have to change the COM port.
Are you in download mode? Do you see the "Firmware Update" screen?
User ports.bat and note the "netdiag" COM port.
Then enter:
Code:
Send_Command.exe \\.\COM#
Replace # with your number.
Click to expand...
Click to collapse
Yup its in download mode i have the firmware update on my screen.. still to no avail i also installed LG driver and restarted.. opened send_command.exe it just closes back
or do i just enter the script after the # after special command? at because im now at this part http://i.imgur.com/fre9Z9l.png just that when i double-click send command it just closes back
dreamnoob said:
Yup its in download mode i have the firmware update on my screen.. still to no avail i also installed LG driver and restarted.. opened send_command.exe it just closes back
or do i just enter the script after the # after special command? at because im now at this part http://i.imgur.com/fre9Z9l.png just that when i double-click send command it just closes back
Click to expand...
Click to collapse
are you opening send command from the command prompt?
Do NOT double click on the Send_Command.exe
READ again:
Inside of LG_Root folder hold shift and right click a blank space you should see "Open command window here"
Click to expand...
Click to collapse
Then enter "Send_Command.exe \\.\COM#"
dominik-p said:
Do NOT double click on the Send_Command.exe
READ again:
Then enter "Send_Command.exe \\.\COM#"
Click to expand...
Click to collapse
oh okay means im on the right path..
so now i just do this as follows?
Type "id" and press enter (no quotes).
You should get back some text starting with "uid=(0)root gid=(0)root". If not, press CTRL-C, and do step 9 again (the application sometimes doesn't respond on the first command).
Run the command specified in the section below titled 'Commands to Run' to flash the rooted system image.
After a few minutes of sitting, you should get back a "#" prompt. This indicates the process has finished.
Type "LEAVE" (no quotes) and press enter. Your phone should reboot, and your phone will be rooted.

How do I Root LG G3 D855 V30n Marshmallow?

Was hoping someone could help me find a way of rooting my G3 D855 V30n on Marshmallow as every method I try fails. Is there a sure fire strategy out there for me to DiY? Many thanks for your help.
V30n is unrootable for now.
So Downgrade to V30C and you will be fine.
Sotiris02 said:
V30n is unrootable for now.
So Downgrade to V30C and you will be fine.
Click to expand...
Click to collapse
Many thanks. Now to work out how to downgrade...
technojockuk said:
Many thanks. Now to work out how to downgrade...
Click to expand...
Click to collapse
Before starting take a backup of your files (if you want)
So let's go on..!
Go here and select the first one.
http://storagecow.eu/index.php?dir=Xda/LG+G3/Stock/D855/Android+6.0/
Then go over here
http://forum.xda-developers.com/showthread.php?t=2785089
And scroll down to "How to flash ROM kdz method"
Enable usb debugging
https://www.recovery-android.com/enable-usb-debugging-on-android.html#part1
Connect your phone to your PC
Download Lg drivers(Not Verizon one's!)
Download Lguptool, unzip it,open the folder and inside of it where all the lguptool files are located move the kdz file that you downloaded.
Open lguptool with admin prompt!
Select type CMDA and phone mode DIAG
Select the kdz file and click "CSE Flash"
Then click "start"
A menu will appear,select language and click "Ok"
After all these steps you will need to wait till the phone boots.
Then you will be able to root your phone and flash ROMs!
Good luck!
(A "thank you" would be really appreciated!)
Thank you so much for this hugely helpful post. Will try it out over the weekend.
Thank You!
Sotiris02 said:
Before starting take a backup of your files (if you want)
So let's go on..!
Go here and select the first one.
http://storagecow.eu/index.php?dir=Xda/LG+G3/Stock/D855/Android+6.0/
Then go over here
http://forum.xda-developers.com/showthread.php?t=2785089
And scroll down to "How to flash ROM kdz method"
Enable usb debugging
https://www.recovery-android.com/enable-usb-debugging-on-android.html#part1
Connect your phone to your PC
Download Lg drivers(Not Verizon one's!)
Download Lguptool, unzip it,open the folder and inside of it where all the lguptool files are located move the kdz file that you downloaded.
Open lguptool with admin prompt!
Select type CMDA and phone mode DIAG
Select the kdz file and click "CSE Flash"
Then click "start"
A menu will appear,select language and click "Ok"
After all these steps you will need to wait till the phone boots.
Then you will be able to root your phone and flash ROMs!
Good luck!
(A "thank you" would be really appreciated!)
Click to expand...
Click to collapse
It worked!!!! Thank you. I am now rooted and enjoying a much faster phone

[Help] LG G4 H815 LGUP failure

Hello!
I tried to update my Vodafone Branded G4 with the europe not branded version H81520g_00_0720.kdz
The problem ist i just get "error code = 0x2000, invalid command response" from the LGUP software and everytime i start the phone it is in firmware update mode.
Any idea how to fix this?
Greetings
I got this too as I tried to install H81520o_00_0310.kdz then I thought that it is maybe related to the brand. So I download your kdz file and then it was working.
So I would guess try another number is the best what you can do. I believe it is because of selection of "upgrade". If you have a tot file for refurbish, then maybe another is working, but I didn't do this yet.
Probably the problem is the DLL.
Extract the DLL from the KDZ (the one you want to flash) and replace it with the one you have in LGUP (path; C:/Program files/LG Electronics/LGUP/Model/8992).
the_naxhoo said:
Probably the problem is the DLL.
Extract the DLL from the KDZ (the one you want to flash) and replace it with the one you have in LGUP (path; C:/Program files/LG Electronics/LGUP/Model/8992).
Click to expand...
Click to collapse
i have the same problem2.
all the kdz that i download not come with any dll files just a 1.73 gb one file size.
kobisa25 said:
i have the same problem2.
all the kdz that i download not come with any dll files just a 1.73 gb one file size.
Click to expand...
Click to collapse
you must extract it from the KDZ with this tool: Click Here
the_naxhoo said:
you must extract it from the KDZ with this tool: Click Here
Click to expand...
Click to collapse
hi so i extract the kdz from LGExtract&7za& manuall tool& when i use winrar to extract its tell me no archive found i try also in winzip software. do you have any idea what else 2do?
thank you.
You can also try the codefire dll: http://downloads.codefi.re/autoprime/LG/LG_G4
( Download and rename LGFLASH_LG_G4_CODEFIRE.dll )
sfX
GOT IT!
the_naxhoo said:
you must extract it from the KDZ with this tool: Click Here
Click to expand...
Click to collapse
so after a long long search and dosents off error i succeeded
i find the currect kdz ISRAEL one and from it i EXTRACT it with WindowsLGFirmwareExtract-1.2.5.0-Release dll file and downgraded to lollipop 5.5 only with this dll file i make it after i try a few rom stocks that work with the dll.
i want to thank you you direct me to the right way:good:
Hi,
I have LG H811 (T-Mobile) Variant. I receive error from LGUP everytime I try to flash this ROM=h81120x_00_1108.kdz
My LGUP shows COM =COM3 and Version=H81120v
The error is thrown at 9%
Nothing working for me I am very frustrated!!!
PLEASE SOMEBODY HELP ME!
Stuck with LG G4 (H81520i)
Same for me but with LG H81520i. I tried to flash these ROM* with their specific .dll that I extracted thanks to WindowsLGFirmwareExtract-1.2.5.0-Release. Always get "error code = 0x2000, invalid command response" from LGUP. The error is thrown at 16% on the computer, but at 7% on the phone. Now, I'm stuck in download mode. I also tried to change the COM port number, doesn't change anything.
*Europe General H81510B_00.kdz ; Europe OPEN H81510D.kdz ; H81510D_00.kdz ; H81520i_00_0922.kdz ; SEA H81510B.kdz
Only one ROM above matches the LG H81520i (the fourth one).
Informations about my (ex-)android firmware :
- Android version : 6.0 (Marshmallow)
- Kernel version : 3.10.84
- Software version : V20-SEA-XX
PS : H81520i is what is written on the LGUP software
______________________________________________________________________________
I found a solution (after several hours)
Uninstall all your LG softwares (except LG Bridge or others LG backup softwares) and go to 'C:\Program Files (x86)\LG Electronics\' to delete all folders and files.
Go to this link and click on "Download all". Extract the file and follow the instructions :
1) Install "LGMobileSupportTool.exe"
2) Install "LGMobileDriver_WHQL_Ver_4.2.0.exe"
3) Install "LGUP_Install_Ver_1_14_3.msi"
4) Install "LGUP_8994_DLL_Ver_0_0_3_23.msi"
5) Move "LGUP_8994.dll" in the repertory 'C:\Program Files (x86)\LG Electronics\LGUP\model\8994'
6) Open "LGMobile Support Tool" and click on "Install USB driver." to the left
7) Select "LGH815" (or your model) et follow the drivers installation steps
8) Do step 5) again
9) Shut off your LG and plug it to your computer while pressing volume up in order to enter download mode
10) Unplug your LG and the battery
11) Open "LGUP" and close it
12) Do step 9 again (download mode)
13) Open "LGUP", select "UPGRADE" and go select your .kdz file (the ones in the file that you downloaded or another one you have)
14) Click on "Start" and DON'T TOUCH !!!!!!
Big thanks to the people of this reddit post and of this XDA thread
See above
Back To Stock ROM LG G4 H811 (T-Mobile)
LucasDupanne said:
________________________________________________________
First of all, I'm not allowed to post links as a new user , so I put them with spaces that you must delete :laugh: . Good luck !
Uninstall ALL your softwares (except LG Bridge or others LG backup softwares) and go to 'C:\Program Files (x86)\LG Electronics\' to delete all folders and files.
Go to this link ( ht tps : / / ya di . sk /d / KIG5F8 2jmXcUR ) and click on "Download all". After downloading the file, extract it and follow the instructions :
1) Install "LGMobileSupportTool.exe"
2) Install "LGMobileDriver_WHQL_Ver_4.2.0.exe"
3) Install "LGUP_Install_Ver_1_14_3.msi"
4) Install "LGUP_8994_DLL_Ver_0_0_3_23.msi"
5) Move "LGUP_8994.dll" in the repertory 'C:\Program Files (x86)\LG Electronics\LGUP\model\8994'
6) Open "LGMobile Support Tool" and click on "Install USB driver." to the left
7) Select "LGH815" et follow the drivers installation steps
8) Do step 5) again
9) Shut off your LG and plug it to your computer while pressing volume up in order to enter download mode
10) Unplug your LG and the battery
11) Open "LGUP" and shut it
12) Do again step 8 (download mode)
13) Open "LGUP", select "UPGRADE" and go select your .kdz file (your one or the ones in the file that you downloaded)
14) Click on "Start" and DON'T TOUCH !!!!!!
==>> thanks to ' ht tps : / / www .reddit . com /r/lgg4/comments/7anayg/downgraded_from_n_to_mm_and_stuck_in_download / ' post
A french man of 15 years that thanks Lobster_Johnson123 very very much.
PS : Sorry, my english is bad And let me know !!! :fingers-crossed:
Click to expand...
Click to collapse
Thanks Lucas for your time and help. It didn't work for me. I flashed another ROM named H811V20r_00_0111.kdz and it worked like a charm and it's tested on so many devices afterwards which worked fine without a single issue.
Here is the link to the ROM: https://lg-roms.com/official-firmware/LG G4-LGH811VK/H811V20r_00_0111/
Thanks for the help though.
androhead said:
Thanks Lucas for your time and help. It didn't work for me. I flashed another ROM named H811V20r_00_0111.kdz and it worked like a charm and it's tested on so many devices afterwards which worked fine without a single issue.
Here is the link to the ROM:
Thanks for the help though.
Click to expand...
Click to collapse
Happy it worked an other way for you !
i had working H815 version 29A nougat installed but for some reason
( nougat restarting issue ) during flashing H815 version 10d , after 9 percent same error comes , i tried by copying extracted dll from H815 v10d kdz in the LGUP (8994 folder) but nothing works for me,
please friends come to resolve my issue. waiting for reply from xda experts
Sanaullahshuaib said:
i had working H815 version 29A nougat installed but for some reason
( nougat restarting issue ) during flashing H815 version 10d , after 9 percent same error comes , i tried by copying extracted dll from H815 v10d kdz in the LGUP (8994 folder) but nothing works for me,
please friends come to resolve my issue. waiting for reply from xda experts
Click to expand...
Click to collapse
You need H81520p.kdz to downgrade from Nougat!
You can download from here: https://www.4shared.com/file/hfyqh6iEfi/H81520p_00_0314.html
Can also see here if you need more files: https://forum.xda-developers.com/showpost.php?p=76571471&postcount=23
Okay I'll try this but please tell me that
I have to copy lgup_8994.dll from H81520p or use original dll which is installed with the LGUP 8994 installer???
Sanaullahshuaib said:
Okay I'll try this but please tell me that
I have to copy lgup_8994.dll from H81520p or use original dll which is installed with the LGUP 8994 installer???
Click to expand...
Click to collapse
After install everything, replace the one in "C:\Program Files (x86)\LG Electronics\LGUP\model\8994" by the given one (or extract from the H81520p.kdz file).
See on the picture how your phone should be detected in "Device Manager":
http://i1376.photobucket.com/albums/ah39/RuedasLocas/Varios/Sem Tiacutetulo_zpsrrscdqov.jpg
H815v20p flashed correctly but mobile in boot-loop then i back installed H815v10d the original but also restarting
xda experts???
whats the issue in your mind experts XDA???
Sanaullahshuaib said:
H815v20p flashed correctly but mobile in boot-loop then i back installed H815v10d the original but also restarting
xda experts???
whats the issue in your mind experts XDA???
Click to expand...
Click to collapse
You first start your phone with any sim or sd card?
Try to flash it again with the v20p and restart it without any card on it.
If it doesn't solve the problem, try a v10a. Maybe it works and you can upgrade starting from there.
Good luck!
now again I tried H815v29A so it installed after the installation of old original version , now please tell the method of rooting Nougat on H815v29A urgently XDA experts???
also Twrp not installing on H815v29A which was working on marshmallow/////
experts reply???

lg g7 stuck in firmware update page

hello, i was upgrading from lgup but the common file is not recognized (check new dll..)....
2. please how can i make recognizable common file? i copied in model folder under program files (x86)... but after failed the common folder disappear
please help
Please state clearly what your problem is.
1. Is the phone stuck on the firmware update page and you do not know how to get out and reboot? Answer: disconnect the phone from the pc and hold vol-down and power up to when the phone reboots.
2. Are you asking how to install the correct dll for lgup so that it will recognize the lg g7? Answer: uninstall completely lgup and reinstall it; download this dll https://drive.google.com/open?id=1U2FjURLlPxsYHyh3dDHyNvWMYRgjs4Ck and put it in the directory C:\Program Files (x86)\LG Electronics\LGUP\model\common (create the directory if you don't have it); connect the phone (you need to have installed the lg drivers last version 4.2.0); run the lgup that should recognize your phone.

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