Develop Bugs

Lg G3 Bricked, no recovery, no download mode

hi guys, flashed the rom stock bumped v20i, I received an error in flash with wipe, I rebooted into recovery but does not go. i lost recovery and download mode (volume up and connected usb to pc does not turn on the device).
any solutions?

Same here, any on f460k korean version =/.

I am getting stuck oin bootloop so had to downgrade. Why can't you get to recovery with battery pull and volume down?

always boot certification security, on download mode and recovery =/ even when connect the usb cable.

http://www.usoftsmartphone.com/t269796.html
Can work?

danielg90 said:
hi guys, flashed the rom stock bumped v20i, I received an error in flash with wipe, I rebooted into recovery but does not go. i lost recovery and download mode (volume up and connected usb to pc does not turn on the device).
any solutions?
Click to expand...
Click to collapse
sambrooke said:
I am getting stuck oin bootloop so had to downgrade. Why can't you get to recovery with battery pull and volume down?
Click to expand...
Click to collapse
danielg90 said:
http://www.usoftsmartphone.com/t269796.html
Can work?
Click to expand...
Click to collapse
Can't get in fastboot mode =(.. i read this http://forum.xda-developers.com/lg-g3/general/fix-unbrick-lg-g3-stuck-qualcomm-hs-usb-t2933853 but cant find the COM port only the unknow device.

i folllowed http://forum.xda-developers.com/lg-g3/general/fix-unbrick-lg-g3-stuck-qualcomm-hs-usb-t2933853 and this is the result http://goo.gl/8FSTNp

i gonna try this http://forum.xda-developers.com/showthread.php?t=2582142 , if result i tell u, did u see the com port in your drive? i don't have drive for offline phone on f460 model.

Sorry this isn't helping you guys but..
I'm really afraid of this happening with my device. That's why I still love my Galaxy s4. Never heard of this on galaxy s4.
I really hope you guys figure out the problem. Good luck!

GG.... i got my phone bricked can't find a way to weak up it again :'(

mafury said:
i gonna try this http://forum.xda-developers.com/showthread.php?t=2582142 , if result i tell u, did u see the com port in your drive? i don't have drive for offline phone on f460 model.
Click to expand...
Click to collapse
Link for file g3?

Those files can be extracted from KDZ 5.0 with the kdz extractor tool. This solution don't work for me u.u' can't find qualcom 805 driver...

when i connect phone https://www.dropbox.com/s/uc1yy49a9iyp2t1/Cattura.JPG?dl=0

QHS
danielg90 said:
i folllowed http://forum.xda-developers.com/lg-g3/general/fix-unbrick-lg-g3-stuck-qualcomm-hs-usb-t2933853 and this is the result http://goo.gl/8FSTNp
Click to expand...
Click to collapse
Is your phone in Qualcomm QHSUSB__BULK mode?
If yes I recently got this problem on my D855 after getting an OTA update, it hardbricked, it will need to be boot repaired, the owner of the board diagnostics software is in the thread you got your software from, he restricted his software so that it will give the said error.
He charges 50 USD for repairing boot, I returned my phone to the seller, you should try the software in offline mode, i-e disconnect from the internet before launching the application, if it works then tell us, if not then probably the best option will be to ask the owner of this software for access.

ScAvEnGeR(PHC) said:
Is your phone in Qualcomm QHSUSB__BULK mode?
If yes I recently got this problem on my D855 after getting an OTA update, it hardbricked, it will need to be boot repaired, the owner of the board diagnostics software is in the thread you got your software from, he restricted his software so that it will give the said error.
He charges 50 USD for repairing boot, I returned my phone to the seller, you should try the software in offline mode, i-e disconnect from the internet before launching the application, if it works then tell us, if not then probably the best option will be to ask the owner of this software for access.
Click to expand...
Click to collapse
my device isn't in Qualcomm QHSUSB__BULK mode, is in https://www.dropbox.com/s/uc1yy49a9iyp2t1/Cattura.JPG?dl=0

Good
danielg90 said:
my device isn't in Qualcomm QHSUSB__BULK mode, is in https://www.dropbox.com/s/uc1yy49a9iyp2t1/Cattura.JPG?dl=0
Click to expand...
Click to collapse
Its a good sign, use the LG flash tool, use the TOT method not the KDZ one...
Good Luck...

ScAvEnGeR(PHC) said:
Its a good sign, use the LG flash tool, use the TOT method not the KDZ one...
Good Luck...
Click to expand...
Click to collapse
Any luck with this as im in a similar pickle.

quintaar said:
Any luck with this as im in a similar pickle.
Click to expand...
Click to collapse
What is being displayed in the device manager after installing drivers?

ScAvEnGeR(PHC) said:
Its a good sign, use the LG flash tool, use the TOT method not the KDZ one...
Good Luck...
Click to expand...
Click to collapse
i try lg flash tool method but devide is not detected

ScAvEnGeR(PHC) said:
What is being displayed in the device manager after installing drivers?
Click to expand...
Click to collapse
The com port as in my thread just wanted to check in this post if anyone has any updates too as this one sounds very similar

fix boot QHSUSB_BULK LG G4 F500

my phone bricked and computer recognize "QHSUSB_BULK".
I use QPST to flash boot for it but no have mpgr and mbn for chip msm8992.
please yous have share for me thanks. sorry my english

Please anyone give us the solution please help some one repair this via usb cable so there was a solution!!!
But how please can anyone help us
Br
Shahzaib Jahangir

darkdevil15101992 said:
my phone bricked and computer recognize "QHSUSB_BULK".
I use QPST to flash boot for it but no have mpgr and mbn for chip msm8992.
please yous have share for me thanks. sorry my english
Click to expand...
Click to collapse
I know on g3 this was considered hard brick had to use wilcrack to reflash bootloader partitions cause the primary gtp is now corrupted for what ever reason g2 and g3 are unbrickable beacause of this i do know u need the tot of the firmware u bricked on have to extract 4 or 5 partitions from said tot. Then flash them to ure phone
Search for g3 hard brick and it can give u a idea just ddont know how compatible it is yet ive done it on g2 and g3 im new to g4
http://forum.xda-developers.com/showthread.php?t=2582142

Ok but on willcracket there was 2nd loader.hex file which was only for msm8974 and 8974AC and our g4 is msm8992 and msm8994
So we badly need msm8992.hex file and rawprogram.xml
And as I see there is some mbn files also sbl1.mbn,sbl1 signed.mbn and more
We need those files for msm8992 please can anyone give us those files so we try it
Br
Shahzaib Jahangir

I got the same problem, my device stops during upgrade and bootloader freeze, I can't enter in download mode, e don't clean in a recovery.
Sometimes it's back, but my win7 64 don't recognize him, few a minutes display off and pc recognized like as qhsusb_bulk!

Night vampire said:
I got the same problem, my device stops during upgrade and bootloader freeze, I can't enter in download mode, e don't clean in a recovery.
Sometimes it's back, but my win7 64 don't recognize him, few a minutes display off and pc recognized like as qhsusb_bulk!
Click to expand...
Click to collapse
Hi, do you have a solution?

manuel1496 said:
Hi, do you have a solution?
Click to expand...
Click to collapse
Bro try board diag

bilawal.sarfraz.1 said:
Bro try board diag
Click to expand...
Click to collapse
What's that?

manuel1496 said:
What's that?
Click to expand...
Click to collapse
Bro tell me first that what your pc is show:
1) QHS_USB BULK 9006.
2) QHS_USB BULK 9008.
TELL ME THAT WHICH TYPE OF DEVICE IS SHOWB IN YOUR PCS DEVICE MANAGER WHEN YOU CONNECT YOUR PHONE WITH PC.

D851 converted to D850 looking for a way back

Hi guys;
So i bought a second hand unlocked D851 ( TMOBILE) with kitkat (cloudy rom) wanted to upgrade it to lolipop but i hard bricked it then used board diag program to bring it back to life but i extracted a d850 rom TOT since the d851 didnt work so now my lg g3 is at&t and permenantly locked ,been trying for a week now to unlocked it for nothing then I read somewhere in this forum that its easy to unlock the d851 using the tmobile app. so is there any way to change it back to D851.

Anyone has any idea?!!

how u use the board diag cuz im stock in qualcomm hs-usb qdloader 9008 and the threadt is closed now

ipus89 said:
how u use the board diag cuz im stock in qualcomm hs-usb qdloader 9008 and the threadt is closed now
Click to expand...
Click to collapse
Try this thread... it is still open & active: https://forum.xda-developers.com/sprint-lg-g3/general/guide-fix-hard-brick-recovery-guide-t3132359

startswithPendswithOOH said:
Try this thread... it is still open & active: https://forum.xda-developers.com/sprint-lg-g3/general/guide-fix-hard-brick-recovery-guide-t3132359
Click to expand...
Click to collapse
how about my problem??!!!

nice8man said:
how about my problem??!!!
Click to expand...
Click to collapse
1)What do you mean permanently locked...carrier/sim, mcafee security, something else? If it's carrier you can order a sim unlock code off of ebay for @$4.00 us, or use any other sim unlock services out there.
2)If you changed a d851 to a d850 using board diag and manually loading the partitions - then why not extract a d851 tot and do the same thing?

startswithPendswithOOH said:
1)What do you mean permanently locked...carrier/sim, mcafee security, something else? If it's carrier you can order a sim unlock code off of ebay for @$4.00 us, or use any other sim unlock services out there.
2)If you changed a d851 to a d850 using board diag and manually loading the partitions - then why not extract a d851 tot and do the same thing?
Click to expand...
Click to collapse
thank you for the reply.
1- its carrier unlock + i have no online wallet and i cant get one
2- thats what im looking for is there a way to manually load d851 partitions i mean when i loaded d850 partitions my phone was in dload mode ( hard bricked) do i have to hard unbrick now again?
by the way i can search for other carriers and i find mine under rat:GSM but i m unable to connect to it .

nice8man said:
thank you for the reply.
1- its carrier unlock + i have no online wallet and i cant get one
2- thats what im looking for is there a way to manually load d851 partitions i mean when i loaded d850 partitions my phone was in dload mode ( hard bricked) do i have to hard unbrick now again?
by the way i can search for other carriers and i find mine under rat:GSM but i m unable to connect to it .
Click to expand...
Click to collapse
1) I don't know of a free way to get an unlock code, so if you can't order one you're probably stuck. Pay a friend who can order one for you?
2) If we're on the same page here and you previously used the board diag tool then that should work again. Hard brick usually shows up in your device manager as qualcomm 9008 instead of an lg device, so to get back to that condition you would have to open the phone up and short a pin -
follow the guide in the link I posted before and you should be good to go. I don't have links for any d851 tot files though...sorry, not my variant.

startswithPendswithOOH said:
1) I don't know of a free way to get an unlock code, so if you can't order one you're probably stuck. Pay a friend who can order one for you?
2) If we're on the same page here and you previously used the board diag tool then that should work again. Hard brick usually shows up in your device manager as qualcomm 9008 instead of an lg device, so to get back to that condition you would have to open the phone up and short a pin -
follow the guide in the link I posted before and you should be good to go. I don't have links for any d851 tot files though...sorry, not my variant.
Click to expand...
Click to collapse
so i need to hard brick my phone again?

nice8man said:
so i need to hard brick my phone again?
Click to expand...
Click to collapse
Unfortunately...I think so. If you were to try and use the lg flash tool and try and tot a d851 file into a d850 it'll probably throw some errors - model check, for ex - and won't flash. You can try and see for yourself if you'd like...here's a link for a couple tools; the 1st is kdz method, second is tot: https://forum.xda-developers.com/showthread.php?t=2785089
To brick it again follow guide I linked( https://forum.xda-developers.com/sprint-lg-g3/general/guide-fix-hard-brick-recovery-guide-t3132359), short that 2nd jtag pin in the pic for @5 seconds, plug in the usb, and it should go to qualcomm 9008. You already know how to do the rest as far as loading partitions and such, and if you don't the guide will tell you what to do.
Good luck :good:

startswithPendswithOOH said:
Unfortunately...I think so. If you were to try and use the lg flash tool and try and tot a d851 file into a d850 it'll probably throw some errors - model check, for ex - and won't flash. You can try and see for yourself if you'd like...here's a link for a couple tools; the 1st is kdz method, second is tot: https://forum.xda-developers.com/showthread.php?t=2785089
To brick it again follow guide I linked( https://forum.xda-developers.com/sprint-lg-g3/general/guide-fix-hard-brick-recovery-guide-t3132359), short that 2nd jtag pin in the pic for @5 seconds, plug in the usb, and it should go to qualcomm 9008. You already know how to do the rest as far as loading partitions and such, and if you don't the guide will tell you what to do.
Good luck :good:
Click to expand...
Click to collapse
the link you attached is for mobiles that are already hard bricked mine is not

nice8man said:
the link you attached is for mobiles that are already hard bricked mine is not
Click to expand...
Click to collapse
Yeah....and?
Re-read your previous post where you asked if you'll have to brick it again.
I said yes, and gave you a link on how to do it. Did you read the link? My guess would be no, since the 1st 4 steps tell you how to brick it and enter qualcomm9008 mode.
You're on your own now. Good luck. And you're welcome for the time I spent trying to help you.

startswithPendswithOOH said:
Yeah....and?
Re-read your previous post where you asked if you'll have to brick it again.
I said yes, and gave you a link on how to do it. Did you read the link? My guess would be no, since the 1st 4 steps tell you how to brick it and enter qualcomm9008 mode.
You're on your own now. Good luck. And you're welcome for the time I spent trying to help you.
Click to expand...
Click to collapse
Thank you for your replies man i really appriciate it...i have read that topic like 5 times; maybe i dont understand english very well but when i read the title LG G3 Hard Brick Recovery+ Required Materials:Bricked LG G3 i thought he meant that this topic is for people that has thier phone bricked and need to recover them.

nice8man said:
Thank you for your replies man i really appriciate it...i have read that topic like 5 times; maybe i dont understand english very well but when i read the title LG G3 Hard Brick Recovery+ Required Materials:Bricked LG G3 i thought he meant that this topic is for people that has thier phone bricked and need to recover them.
Click to expand...
Click to collapse
It's cool. Yes the guide is for already bricked phones, but what I was trying to say is since you have a functional phone rt now you're gonna have to brick it, and by brick it I mean qualcomm9008 mode, and that's what the 1st part of the guide shows you how to do by shorting out the pin. Once you get to Qualcomm mode you can then use the board diag tool and load your partitions that you extracted from the tot and hopefully get back to your original d851 phone and get back up and running. Does that make more sense?
Again...good luck

startswithPendswithOOH said:
It's cool. Yes the guide is for already bricked phones, but what I was trying to say is since you have a functional phone rt now you're gonna have to brick it, and by brick it I mean qualcomm9008 mode, and that's what the 1st part of the guide shows you how to do by shorting out the pin. Once you get to Qualcomm mode you can then use the board diag tool and load your partitions that you extracted from the tot and hopefully get back to your original d851 phone and get back up and running. Does that make more sense?
Again...good luck
Click to expand...
Click to collapse
I did not know that you can hard brick the phone by shorting the pins; thank you.

startswithPendswithOOH said:
It's cool. Yes the guide is for already bricked phones, but what I was trying to say is since you have a functional phone rt now you're gonna have to brick it, and by brick it I mean qualcomm9008 mode, and that's what the 1st part of the guide shows you how to do by shorting out the pin. Once you get to Qualcomm mode you can then use the board diag tool and load your partitions that you extracted from the tot and hopefully get back to your original d851 phone and get back up and running. Does that make more sense?
Again...good luck
Click to expand...
Click to collapse
I hard bricked it again and then extracted another D851 tot and then loaded all the necessary partitions but the phone still on qload mode i copied the sbl1.mbm of the D850 and tried them with D851 partitions the phone revived but not in download mode.
I managed tp recover all partitions and the phone is on dowloading mode but still detected as d850 so i have the dll cross error everytime i try to flash a rom even with using the custon dll file.

Hard Un-Brick chance H815? My story

Dear all, my quick story overwiev:
I have G4 H815 10H
Heat sink upgrade due to bootloop was done week ago and was ok
Wanted make software update to Nougat from 5.1 Lolipop and then some problems comes out
For this puprose wanted gain Root access, so
went through out https://forum.xda-developers.com/g4...t-tmo-vzw-intl-variants-soon-root-lg-t3164765 , but with 1 mistake, I've download T-Mobile H811 10H Version instead of H815 version and run
dd if=/data/media/0/system.rooted.H81110h.img bs=8192 seek=65536 count=548352 of=/dev/block/mmcblk0
After this got Security error #11
So went to Stock Frimware flashing KDZ procedure https://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848
I've decided to flash Europe General H81510B_00.kdz file
but..... now this phone doesn't boot. I can see only Qualcomm hs-usb qdloader 9008 in my device manager.
I know that some of you guys (@TheMadScientist @steadfasterX) are able to unbrick this, really please help.

krzakx said:
Dear all, my quick story overwiev:
I have G4 H815 10H
Heat sink upgrade due to bootloop was done week ago and was ok
went through out https://forum.xda-developers.com/g4...t-tmo-vzw-intl-variants-soon-root-lg-t3164765 , but with 1 mistake, I've download T-Mobile H811 10H Version instead of H815 version and run
dd if=/data/media/0/system.rooted.H81110h.img bs=8192 seek=65536 count=548352 of=/dev/block/mmcblk0
So went to Stock Frimware flashing KDZ procedure https://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848
I've decided to flash Europe General H81510B_00.kdz file
but..... now this phone doesn't boot. I can see only Qualcomm hs-usb qdloader 9008 in my device manager.
I know that some of you guys (@TheMadScientist @steadfasterX) are able to unbrick this, really please help.
Click to expand...
Click to collapse
Well.. You have corrupted the partition table as you used the wrong seek value. The procedure there is EXTREMELY risky and that's one reason why.
You need qfil in that mode. Download this file:
http://droid.binbash.it:8008/unbricking/qfil/h815/G4-h815_fullunbrick_working_7a3ae5809224d.zip
Install qpst and the drivers file from the software folder and after that start qfil. Select the prog_emmc_firehose file from the flashing folder in qfil and select the rawprogramm0 and patch0 file before clicking download.
After succeeded try download mode again and flash any h815 kdz again.
If that doesn't work you either have to wait until I'm back from vacation or find someone else with a box (e.g. infinity) to fix the gpt.
Sent from my LG-H815 using XDA Labs

steadfasterX thanks for your effort! Going to try it morning.
By the meantime maybe @TheMadScientist can say something from his experience?
How about SD card unbricking method https://forum.xda-developers.com/g4/help/unbrick-lg-g4-h811-9008-qualcomm-t3456417
I've tried once but it dosen't work.
Thanks in advance.

krzakx said:
steadfasterX thanks for your effort! Going to try it morning.
By the meantime maybe @TheMadScientist can say something from his experience?
How about SD card unbricking method https://forum.xda-developers.com/g4/help/unbrick-lg-g4-h811-9008-qualcomm-t3456417
I've tried once but it dosen't work.
Thanks in advance.
Click to expand...
Click to collapse
Guys I just studied it I ever actually had to unbrick mine. I studied in help for others so I don't know how much help I would exactly be

krzakx said:
steadfasterX thanks for your effort! Going to try it morning.
By the meantime maybe @TheMadScientist can say something from his experience?
How about SD card unbricking method https://forum.xda-developers.com/g4/help/unbrick-lg-g4-h811-9008-qualcomm-t3456417
I've tried once but it dosen't work.
Thanks in advance.
Click to expand...
Click to collapse
Yes that way is possible too. The only way it worked for me is by using dd to flash the gpt to the external sdcard and then flashing the bootloader stack plus laf. Quite easy if you have some Linux experience. But if not... you need a proper guide..
maybe there is a working h815 image out there as well but the one you're referring to is for the h811.... OMG you haven't used that one did you??? H811 has ARB!!! If you don't know what that means read https://bit.do/antirollg4 and ASK before using files not related to your model.
I'm very interested what SALT would tell us about your ARB once the device is working again....
Sent from my LG-H815 using XDA Labs

I have some base linux experience, (Debian) so no "handle follow guide" would be needed.
Yes, I have used H811 file, that was my mistake . I've exactly used this file http://downloads.codefi.re/thecubed/lg_g4/lef/h81110h.tar.gz from this topic https://forum.xda-developers.com/g4...t-tmo-vzw-intl-variants-soon-root-lg-t3164765 ,
Dear steadfasterX , please take one more time overlook for my situation and think about wright steps. Waiting for yours advices.
Best regards.

krzakx said:
I have some base linux experience, (Debian) so no "handle follow guide" would be needed.
Yes, I have used H811 file, that was my mistake . I've exactly used this file http://downloads.codefi.re/thecubed/lg_g4/lef/h81110h.tar.gz from this topic https://forum.xda-developers.com/g4...t-tmo-vzw-intl-variants-soon-root-lg-t3164765 ,
Dear steadfasterX , please take one more time overlook for my situation and think about wright steps. Waiting for yours advices.
Best regards.
Click to expand...
Click to collapse
No I was talking about the sdcard files. Flashing the h811 system file will not increase ARB (as said you corrupted the gpt though) but when you flash the h811(which you linked in your second post!) files to write the sdcard and then trying to boot from the sdcard it very likely will increase the ARB.
Ok so you haven't used the sdcard method yet?
Then try that one:
https://forum.xda-developers.com/g4/development/unbrick-lg-g4-h815-9008-qualcomm-t3452853
Again try to boot to download mode with that and flash a h815 kdz. You MAY have luck but it depends. Give it a try.
Sent from my LG-H815 using XDA Labs

krzakx said:
Dear all, my quick story overwiev:
Click to expand...
Click to collapse
In the photo of your phone in download mode, it identifies as an LG-H810 running H81010o.
If I may ask, where did you get this phone from?

terence.tan said:
In the photo of your phone in download mode, it identifies as an LG-H810 running H81010o.
If I may ask, where did you get this phone from?
Click to expand...
Click to collapse
Dear @terence.tan you've asked good question.
So phone is from China seller, additionally I've made some photos of motherboard and got confused as you can see there VS986_MAIN_1.0 oh no... is all so mixed up.
Unfortunately do not have system.img back up eh.... stupid me.
SD Card method doesn't work.
Now I am think if I should go this method
https://forum.xda-developers.com/g4/help/lg-g4-vs986-super-hard-brick-unbrick-fw-t3666784
it's only idea because my motherboard seems to be VS968 labeled, but let me ask you guys as specialists.
Waiting for answer. Thanks.

One more question regarding SD Card method guys,
I've just prepared SD card fallowing this topic https://forum.xda-developers.com/g4/development/unbrick-lg-g4-h815-9008-qualcomm-t3452853 , but it doesn't work.
Just for confirmation here you can se parted print, can you check please If I've burned SD Card image properly?
https://hastebin.com/inimikipux.sql
Thanks

Hi there! So you have a phone with a VS986 main board, which identifies as an H810, which was sold to you as an H815. (Which you have flashed with H811 software.)
The seller of your phone in China has done something strange to make this all work, we don't know what.
I'm sure you will understand, it will be very difficult for anyone to tell you exactly what to do.
The sdcard unbrick you tried didn't work because it has the boot stack files for H815, which require a phone with ARB version 0. I suspect you will need to copy either the VS986 or H810 boot stack files to your sdcard for it to work. (I don't know which, only the seller knows...)
However trying alternate boot stacks has a chance to increment your ARB; you should consider the consequences and not use anything with a high ARB before trying lower ones...

steadfasterX said:
Well.. You have corrupted the partition table as you used the wrong seek value. The procedure there is EXTREMELY risky and that's one reason why.
You need qfil in that mode. Download this file:
http://droid.binbash.it:8008/unbricking/qfil/h815/G4-h815_fullunbrick_working_7a3ae5809224d.zip
Install qpst and the drivers file from the software folder and after that start qfil. Select the prog_emmc_firehose file from the flashing folder in qfil and select the rawprogramm0 and patch0 file before clicking download.
After succeeded try download mode again and flash any h815 kdz again.
If that doesn't work you either have to wait until I'm back from vacation or find someone else with a box (e.g. infinity) to fix the gpt.
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
I'm literally praying to the Android Gods that this works. If it doesn't then I am truly truly lost...
Wish me luck!

Ugh!
I get this...
Sending NOP
ReadFile last error: 0
Response is NULL
NOP: Fail Code: 14
Unable to send FireHose NOP. Device is not in FireHose mode!
Download Fail:FireHose Fail FireHose Fail: Failed to send FireHose NOP to the phone.
Finish Download
Man, This LG is kicking my ass!
Any suggestions?

donniegalaxy2 said:
Ugh!
I get this...
Sending NOP
ReadFile last error: 0
Response is NULL
NOP: Fail Code: 14
Unable to send FireHose NOP. Device is not in FireHose mode!
Download Fail:FireHose Fail FireHose Fail: Failed to send FireHose NOP to the phone.
Finish Download
Man, This LG is kicking my ass!
Any suggestions?
Click to expand...
Click to collapse
Having just these problems on qfil with my h815 did you found a solution?

sr.arenisca said:
Having just these problems on qfil with my h815 did you found a solution?
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Click to collapse
No solution found by me!!! I gave up and sold the phone to ecoATM!

Downgrade 7.0 to 6.0

Hello everyone, it's been many months since I'm using the official LG v29a beta ROM installed with the booloader locked with LGUP.
I would like to go back to Marshmallow how can I do? My G4 is Italian no brand.

Al3xCooki3 said:
Hello everyone, it's been many months since I'm using the official LG v29a beta ROM installed with the booloader locked with LGUP.
I would like to go back to Marshmallow how can I do? My G4 is Italian no brand.
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Click to collapse
Cazzo... did you try the search box?
Doesn't matter. If I already lost a minute writing that, I can also advise you...
Flash V20p.kdz with LGUP. Don't forget you need to use the right .dll for the phone to be recognized.
If you use the search box you'll find what you need.

RuedasLocas said:
Cazzo... did you try the search box?
Doesn't matter. If I already lost a minute writing that, I can also advise you...
Flash V20p.kdz with LGUP. Don't forget you need to use the right .dll for the phone to be recognized.
If you use the search box you'll find what you need.
Click to expand...
Click to collapse
Sorry but I do not sail much in this forum! How do I know which right dll to use?

Al3xCooki3 said:
Sorry but I do not sail much in this forum! How do I know which right dll to use?
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I'll send you the files by PM otherwise this will become a long conversation.

RuedasLocas said:
I'll send you the files by PM otherwise this will become a long conversation.
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Click to collapse
Tank you

I have the same problem. I have updated my LG G4 to 7.0 beta. Now the problem for me is I can't able to boot into download mode it says "Your device is corrupt. It cannot be trusted and will not boot" phone is booting until lokscreen it freezes there and restart again.
My Lg G4 is from Taiwan. It doesn't allow to unlock bootloader. Any help much appriciated.

ronniem88 said:
I have the same problem. I have updated my LG G4 to 7.0 beta. Now the problem for me is I can't able to boot into download mode it says "Your device is corrupt. It cannot be trusted and will not boot" phone is booting until lokscreen it freezes there and restart again.
My Lg G4 is from Taiwan. It doesn't allow to unlock bootloader. Any help much appriciated.
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Click to collapse
Corrupted Bottloader is not the Thread. Power Button to Continue and Downloadmode starts!!!
for downgrade to MM use:
https://forum.xda-developers.com/showpost.php?p=73642302
Firmware is to search!!!

uweork said:
Corrupted Bottloader is not the Thread. Power Button to Continue and Downloadmode starts!!!
for downgrade to MM use:
https://forum.xda-developers.com/showpost.php?p=73642302
Firmware is to search!!!
Click to expand...
Click to collapse
Thank you for the reply but my phone is not booting in download mode at all

ronniem88 said:
Thank you for the reply but my phone is not booting in download mode at all
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Click to collapse
If you're stuck in LG logo boot up, just try to start LGUP (having the right files), connect the phone to a USB2 port and start the process.
Today, after try the RR ROM, I re-install v29a with TWRP but got stuck on the LG logo boot up, I just disconnected the phone from the computer, turned ON LGUP, connected the phone, was detected as it should and re-flash the v20p.kdz again. No problem... try it.
Can also see this: https://forum.xda-developers.com/showpost.php?p=76951541&postcount=30
Good luck.