yashsingh1/xdaforums huggingface dataset:
[T-Mobile LG G4] lapist:
I got a non-working G4 from a friend - it doesn't start at all. He said it was bootlooping and then it died completely.

When I connect it to PC, it appears as "Qualcomm HS-USB QDLoader 9008" or qhsusb_bulk in device manager. It doesn't run even in download mode or recovery, screen is not showing anything.

The only thing that helped was putting the phone to the freezer for a few hours - then Android started up to the unlock screen, but it froze a few seconds later and stopped working again.

Is there any chance that the phone can be fixed somehow by e.g. disabling big cores or baking the mainboard in the oven etc?
[T-Mobile LG G4] Trex888:
i have the exact same problem

you can just press volume up keep pressing hold it then connect usb cable to pc it will boot to download mode the you can flash stock kdz file using LGUP TOOL LGUP TOOL WILL RECOGNIZE YOUR DEVICE WHILE IN DOWNLOAD MODE.

i am gonna try this freezer method hopefully my phone show some life like yours.
[T-Mobile LG G4] lapist:
I don't think you have the same problem as me...as I mentioned, I can't boot to download mode - the phone still looks dead after pressing VolUP+connecting cable, but I get an "Unknown USB device (device descriptor request failed)" in device manager. Sometimes it happens that phone's screen turns on and shows booting to download mode, but it crashes before it reaches download mode and freezes or reboots and dies. It seems to be hardware issue... I can actually boot to download mode or to normal mode successfully when I take the phone out of the freezer, but it crashes/freezes within a few seconds again, probably after it gets warmer.

EDIT:

So I managed to get the phone working. I tried heating it up using hair dryer - witout any effect. Then I removed the mainboard and baked it in the oven (actually I have only halogen convection oven but it was enough) on 250°C for about 10 minutes, put some old thermal paste (over 10 years old cheap paste with quite poor thermal transfer) on CPU and eMMC chip (actually somebody obviously tried to repair that phone already in the past - there was some dried out white thermal paste on CPU already - and then sold it before it crashed again), I also put alluminium foil on top of the CPU and eMMC to ensure that CPU is touching the heatsink, assembled all back into the phone and it works. I was able to enter download mode, flashed Lollipop KDZ firmware using LGUP, it was bootlooping then, but after flashing TOT file to disable big cores it started to work properly (although very slowly). Then I loaded Marshmallow KDZ, corresponding TOT file to disable big cores, unlocked bootloader, flashed TWRP, SuperSU, unlocked all 4 little cores and so far everything runs smooth, let's see how long it will last :)

EDIT2: phone died after 6 days. I tried baking it again, but I overbaked it and destroyed some components...RIP :)
[T-Mobile LG G4] hmartinus77:
Hi, I'm experiencing the same problem, after flashing MM kdz file, the phone gets blank when tge status rebooting on LGUP. After that the phone is detected as QD loader.

Then I use step from other forum to revive the phone using Qfil and manage to get the phone boot again but the imei is unknown, can get to download mode and try to flash the MM kdz again, it came up in same problem again, it won't boot up.

What should I do to get the phone work again?
[T-Mobile LG G4] Trex888:
hi there

can you give me files that you use in qfil cuz i have same problem i flashed mm kdz and now its dead NO DOWNLOAD MODE NO RECOVERY NOTHING.

.i will give you a heavily paid tool for free CALLED Z3X PREMIUM and guide to restore the imei and orignal kdz back just share me the files you use in qfil and i will test it then once my phone show download mode the tool i have it will fix the rest of the issues.but this tool need my phone to be in download mode.

HOPE WE FIX OUR DEVICES SOON.

TIA
[T-Mobile LG G4] tecbopay:
alguien tiene el archivo para un ls991?

Gracias
[T-Mobile LG G4] mucaco:
Hello,

I brick my LG G4 (model H811) with not compatible ROM, intended for model H815.

Before the phone brick i was using H-ROM G6 PORT, compatible ROM with H811.

-Phone come to life using the method from the first post

-Can get into download mode, no recovery

-LGUP recognizes phone as model H872, with the appropriate DLL file upgrade stuck on 14% (error code=0x80000202) used

(H81120o_00_0613.kdz)

-Using LG Flash Tool download FAIIL (61 sec)

Could you please give me some advice how to solve this.Sorry for bad ENG.Thanks in advance.
[T-Mobile LG G4] rajesh rajan:
Hi,

I am also stuck at this state. The LGUP tool states the phone as unknown.

How can I retrieve back the phone into working state?

I am able to access download mode but am not able to do the LG Flash with the KDZ method as it keeps failing after 9%.

What can be done?
[T-Mobile LG G4] trebla459:
https://xdaforums.com/g4/help/lg-g4-h818p-bricked-please-help-t3720580

Can you help me please? :( Is this the right method for my problem?
[T-Mobile LG G4] joecandle:
This method worked perfectly for me. And I used an 8 GB microsd card. It was enough to bring the LG G4 back from the dead. Thank you
[T-Mobile LG G4] jrchester:
This is very close to working for me using a Soft Bricked H811. The firmware file you referenced is actually a KDZ ZIP file. What am I supposed to write out with the Win32DiskImager? I extracted the filename.kdz file from the ZIP archive and then renamed it to .IMG and wrote to SD card with Win32 tool. Have also tried writing out the .kdz to the SD card with Win32.

LGUP tool you referenced is (sometimes) asking for a TOT file. It doesn't completely run with the image on the SD Card. LGUP starts the upload to my phone through about 4% but then says file is corrupted.

My Soft Bricked phone - can enter Download mode (both factory reset screen via Pwr and Vol Down, and also Firmware Download via Vol Up and then USB connection to computer). TWRP is lost (but once was there), Factory reset does nothing - screen blank. Firmware connection via SD card as described here connects now as Port = LGE AndroidNet USB Serial Port (COM7). I'm not sure of the original firmware. Have tried "o" version and "p" version of firmware. "p" version actually got much further and it show RR boot screen for awhile (about 27%) - then rebooted phone automatically and then nothing. Am going back to retry another format of SD Card and retrying "o", "p" and "r" firmware one at a time.

Would greatly appreciate any suggestions....

Thanks
[T-Mobile LG G4] chozycorleon:
Hello after following the instructions my dead phone came back to life but while trying to flash something in twrp it froze and restarted I can boot it up just fine but my computer is unable to detect it.. And I cant boot into twrp like I did earlier any ideas..
[T-Mobile LG G4] jam1445:
What did u tried to flash?
[T-Mobile LG G4] chozycorleon:
I flashed this LG-H81120i-Flashable.COMPLETE.zip in twrp
[T-Mobile LG G4] chozycorleon:
If I plug to the Desktop computer am getting unknown device and if I remove thee money card am getting the qload as before what should I do?
[T-Mobile LG G4] jakefeild:
Won't work

I keep getting stuck at step 3./4. I follow the instructions to the letter, and my device never enters download mode. It just stays blank (no screen or LED turn on at all). Can you help me?
[T-Mobile LG G4] jrchester:
Check your PC Comm Port when you connect the USB cable. If it say's "Qualcomm HS-USB QDLoader 9008" - then your G4 phone is in a Hard Brick state. It appears to be possible to fix it, but that's another story and that I'm looking into now for my G4. This thread info relies upon the G4 being able to get into Download Mode (Soft Brick).
[T-Mobile LG G4] jojobans:
hi guys

i use sd card 8gb and select file from pc and start write when write is done push sd card to phone and connect cable for download mod but nothing change why ?i have g4 h811
[T-Mobile LG G4] donniegalaxy2:
man i hope this works!! Lol!
[T-Mobile LG G4] donniegalaxy2:
I'm stuck in qcomm 9008 mode and when I try this it actually tries to boot but I get an error saying MODDED Error 1008.

It seems to me that this .bin is rooted or somehow modified in some other way.

Does that sound possible?

Where/how do I get a different .bin file?

If I had a working H811 can I make the file with it and use it to revive my qcomm 9008?

Much love, thanks, anxiously awaiting any kind of direction :)
[T-Mobile LG G4] patrdm83:
I have a T-Mobile H810/H811 mixed model. I've tried a lot of methods but I'm having major problems. Please look at my thread and help me. This process can be sooooooo....sooooo frustrating ::mad:: https://xdaforums.com/tmobile-g4/general/badly-help-lg-g4-t-mobile-h810-t3762001
[T-Mobile LG G4] D0netsk:
I've got an H811 which was bricked after I attempted to flash 10n on it.

It was completely dead, no lights no download mode, showing up on PC as HSUSB_BULK. Hardware IDs say 9008. Using your method I've managed to boot it into download mode, and the phone goes right to the Firmware Update screen and stays there for long time without any problem.

Now here's the problem I got: I've tried 2 PCs with LGUP and the phone wouldn't be recognised. It always says "no handset connected". I've installed LG Mobile Driver 4.2.0. Also LG United Mobile Driver 3.8.1, LG SP USB Driver 1.0 and LG USB WML USB Driver 1.0 have been installed via LG Mobile Support Tool. I then installed LG 8994 DLL. Finally LGUP (1.14.3). But still every time LGUP says there's no handset connected. My cable is fine, tested using other devices. Port should be fine as it shows up as 9008. I'm wondering what I might have done wrong. Any suggestion would be appreciated.

I noticed that only when the phone's without the SD card it shows up in PC. When card inserted it doesn't. Maybe this indicates something? Or is it just normal? Thanks in advance.
[T-Mobile LG G4] lazzy63:
which file of firmware did u converted to .img just tell me then i ll convert for my G4 H815
[T-Mobile LG G4] lzgmc:
To anyone doing this:

THIS WILL NOT WORK UNLESS YOUR BOOTLOADER IS UNLOCKED!!!
[T-Mobile LG G4] sami.young:
sd card size

What will happen when an sd card of less size is used?
[T-Mobile LG G4] siyas.jr:
Can it be done with a pre rooted Systemimage..?

I wasnt able get download mode with the image provided in this thread since my bootloader is locked before the hardbrick. flashing via qfil also failed showing up firehose fail.

---------- Post added at 08:17 AM ---------- Previous post was at 08:12 AM ----------

Can it be done with a pre rooted Systemimage..?

I wasnt able get download mode with the image provided in this thread since my bootloader is locked before the hardbrick. flashing via qfil also failed showing up firehose fail.
[T-Mobile LG G4] Cinderella17:
Hello One question.. Do i have to unzip this file: 6. SystemImage Bin File - Download Here, or just change the name like the guide says? Thanks
[T-Mobile LG G4] androhead:
LG H811 LGUP and LG Flash Tool ERROR

Hi All,

I have LG H811 (T-Mobile) Variant. The problem is I cleaned Cache, Dalvik Cache, System, Data using recovery for flashing a custom ROM. Later, I found out the custom ROM couldn't install and I wanted to go back to stock. (I only have download mode now; NO RECOVERY, NO BOOTLOADER)

BUT I have tried everything, nothing works.

1- I downloaded KDZ file for H811 and used LG Flash Tool 2014 it threw an error.

2- THEN I downloaded LGUP tool and it gives Error at 9%: Error Code = 0x2000, CEFS::Initialize() and I haven't found any solution for it.

LGUP shows my COM port COM3, Version H81120v

My KDZ file is h81120x_00_1108.kdz

PLEASE HELP ME!!!!!!
[T-Mobile LG G4] Armonte:
i literally have the exact same issue. When the phone's in download mode, goes straight into firmware update and isn't detected

i've tried wiggling cables (multiple cables, like 4) on FWUL & seeing if dmesg says anything but I get nothing

I've tried a bunch of different cables, on two Window 10 PC's (a W7 VM on W10 too) and FWUL, SALT doesn't detect it either.

wat do plzfix
[T-Mobile LG G4] anshintakuha:
My phone die after flashing, its work for me ?
[T-Mobile LG G4] icoolie:
Hi and a very pleasant day. I have an LG G4 LS991 Model that is hard bricked. I have extracted the firmware from the device itself before bricking. I would like to know how can I retrieve the systemImage.bin file needed to do sd card fix?
[T-Mobile LG G4] miguelr4720:
it did not worked for me the phone keeps restarting every time and it wont stay on download mode please anyone has any idea

i flash the LG K7 fimeware into LG G4 H811 and ended up Briked my LG G4 Anyone Please Help me With This i dont know why is not staying in download it keeps restarting and LG UP gives me and error there is no handset connected please help??
[T-Mobile LG G4] Gav13:
I have the same. Don`t know what to do. Please help.
[T-Mobile LG G4] Serge Khay:
please i upgraded my lg h811 from andriod 5.0 to andriod 6.0 using lg bridge. After

please i upgraded my lg h811 from andriod 5.0 to andriod 6.0 using the lg bridge software and after the upgrade the phone is completely dead. It wont turn on, show charging or boot into recovery mode. When i connect to my laptop i hear sound but my phone is not showing on the computer. please is there any help?
[T-Mobile LG G4] Apple4you:
help UNLOCKING My LG G4 811 (T-Mobile)

hello

My LG G4 811 (T-Mobile) unable to enable OEM unlock. When I enable, it automatically disabled. Help please:confus:
[T-Mobile LG G4] bilal_law:
I had the same issue but I tried to downgrade it

I bought used h811, but it has issue of restarting every time I tired to uninstall any app or tried to go to security setting. So I decided to downgrade it (I have no idea about ARB at that time), the device show h811-21y, So I download h811-10n firmware & use lgup to downgrade after it complete 100% it get bricked, and show qualcomm 9008 on the PC. I then open the device and found out it is h810 written on the motherboard.

I tried almost every qfil mbn files present on the internet but failed.

Then I tired this firmware

LGH810AT-01-V21y-310-410-JUN-20-2016-ARB03+0.rar

and use this youtube method to create raw programme & patch

watch?v=RhG02kmSelk

Then I use sd card method as this youtube method suggest

watch?v=kX2Fm1zEx5E

my device show sign of life but stuck in "secure booting error 1009"

At that point I am totally stuck since I does not get any help with this error on the internet
[T-Mobile LG G4] mamad bavi:
Hello

I did this at the height of my involvement and difficulty

But you know what happened

1 memory partition corrupted

2 Kurdish regiment systems

3 Nothing could restore the memory partition

4 This is just a waste of time for some malicious software
[T-Mobile LG G4] plexeg:
i have the same problem with (h631/ms631) how can i get the image system file.bin????????

it dosen`t open up
[T-Mobile LG G4] Pheochromocytoma:
I downloaded the files and followed all the steps but I am getting a secure booting error code 1006. I have the LG G4 H811 from T-Mobile. Phone is also in a bootloop.
[T-Mobile LG G4] abikerider:
Is there a particular allocation unit size that works best when formatting the SD card? I'm going to try 128kB.
[T-Mobile LG G4] s1mplelulu:
anyone have systemimage.bin for lg wing?
[T-Mobile LG G4] jam1445:
I hope that sd card adapter will help you out...
[T-Mobile LG G4] divine1250:
Well, Still getting stuck at 9% every time I try to flash 20i kdz. 20i was the last firmware I was on before brick so I have no idea what the problem is. I'm not a noob(been a member of XDA for 7 years) which is why its frustrating. I am greatful for this fix though, because my phone was DEAD and now ITS ALIVE!!!... Thank you for getting this going for us. I have no doubt that we will find full-proof solution. Until then I will keep trying...
[T-Mobile LG G4] eshtak12:
UPDATE:

After using a card reader inserted the sd card to my phone and now it shows that it needs charge. Now my phone is alive at least and I would like to thank you!
[T-Mobile LG G4] jam1445:
This method worked on my H811 and now i am using it with Debloated H81120o. Now I am going to try Dual Boot Patcher and will share the feedback as well.
[T-Mobile LG G4] jam1445:
Its really good to know that it helped you!!!
[T-Mobile LG G4] rokaxis:
I can help, try the process with the bin mega risen, but my model is the h818p, I can say how I get the bin for my model, thanks
[T-Mobile LG G4] aftabadil:
I just follow ur instructions and my phone alive again but one thing after 4 or 5 min later my phone goes blank and turn into Qualcomm 9008 and when i pull battery and insert again phone booted again in normal. Plz help me in this meter i tried all kdz firmwares and also custom roms but still facing this problem. My phone model is h811.
[T-Mobile LG G4] divine1250:
FINALLY got this to work 100%!!! I wanted to kick myself when i succeeded on my last attempt. I couldnt understand how i kept failing at 9% in LGUP, so i started again but this time i flashed 20i stock debloated rom in TWRP. Then i let that boot up and go through setup process. From there i went to developer settings and enabled debugging mode. Then i plugged in phone and let drivers reinstall. Then i launched LGUP as administrator and my device was recognized immediately. From there i chose upgrade and selected 20o kdz and closed LGUP and reopened LGUP and started the flash in refurbish mode. The process began and when it reached 9% this time it rebooted my phone to download mode and i then removed sdcard and BOOM, the flash completed and my phone booted without sdcard. I think starting out in download mode doesnt work for every device so i started in the os itself and it worked flawlessly. Thanks alot. I really appreciate this fix. Now i can reformat my 32gb sdcard and get my extra storage back!!! Hope this helps someone that is having trouble!
[T-Mobile LG G4] jam1445:
Thats Great!
[T-Mobile LG G4] jam1445:
Sorry for that. Just try it once more and make sure that you follow each step in the exact way mentioned. If any concern, let us know!
[T-Mobile LG G4] rockyjacky:
Use hex editor change header file of H811 to H815 then flash it through LG UP???? Just search how to use hex editor.

I hope it helps.
[T-Mobile LG G4] T.E.I.M:
help..........

i need singleimage VS986.......
[T-Mobile LG G4] kenerly:
I can't boot into TWRP to do the step you did. It boots to firmware update regardless of what method I use (using vol up - boots to download mode that quickly changes to firmware update screen). I am able to do all the steps you did for LGUP but mine gets stuck at 11% (modem) step and it did not reboot my phone like it did yours?
[T-Mobile LG G4] divine1250:
First, What rom are you currently on? As for twrp, you have to press volume down+power and as soon as logo shows quickly release power and press and hold power again until white screen comes up, choose yes on both selections.
[T-Mobile LG G4] premiso:
I notice that the singleimage.bin is for the v20o, is there a way to get it for like v20h / v20i? THe v20o brings it alive but does the Secure Boot 1006 error and I am just curious if the other versions may actually get me out of that error. Not sure what is entailed on making the singleimage.bin file. Hopefully it can be done.

Thanks for the efforts! If I can get this working in some form I am more then willing to throw a few bucks someones (or multiples) way :)
[T-Mobile LG G4] rockyjacky:
I also have H811. But did not work. Device is dead stuck on 9008. No charging no boot nothing is happening. However if i keep the device without battety for 2-3 days. Then it goes to download mode for few seconds. Download mode does not stay for long so that i flash it. Any possible solution???
[T-Mobile LG G4] kenerly:
I'm on LG-H81120i-Flashable.COMPLETE. I get the white screen, answer yes to both questions then it boots to firmware update.
[T-Mobile LG G4] jam1445:
Are you sure that your battery is fully charged. As for now, it seems like battery issue. Get it charged and try again, hopefully it will work.
[T-Mobile LG G4] jam1445:
Bro, which firmware you were on before bricking. Was it v20i or v20o? Also, is it stuck at LG Logo as it might be a Bootloop problem !

If you can explain a little that how your phone bricked, it might also help!
[T-Mobile LG G4] rockyjacky:
How do i charge my battery?? When i plug charger it does not charge. Any thing can happen
[T-Mobile LG G4] jam1445:
You can charge it using any other G4 or external charger may work.

Prefer to buy a cheap Battery charger or use LG G4 Battery Charging Cradle. Bcoz, it will not work without charge.
[T-Mobile LG G4] jam1445:
I am working on it and will share once find anything. Just confirm which version you were on before bricking the device.
[T-Mobile LG G4] hotsamfisher:
hi i'm in a strange position, please hear me out and gimme some new ideas...

y lg g4 h811 got stuck on startup lg screen...whatever i do recovery mode or download mode it stops at lg screen.... BUT

when i remove the battery and press "volume down and power" or "volume up" and insert usb cable then insert battery all modes work fine it even starts and work fine...

I've tried fully flashing mm kdz h81120i with LGUP and it was successfully completed...but still i cant start the phone normally i have to use usb power and then it can pass the lg logo otherwise keep stuck at that logo...

Help please...
[T-Mobile LG G4] jam1445:
Did you installed a rom on it? When and how did it happened?
[T-Mobile LG G4] hotsamfisher:
it was on a 815 ported rom h81520a firmware and its my cousins phone so don't know exactly what happened, but as he say it happened due to overcharging the battery exploded and he bought a new one...and then it started... but i think there must be another reason, maybe somenew update or something...
[T-Mobile LG G4] rockyjacky:
I had the same problem. I flashed my 811 successfully. However did not turn on. I had no information regarding big core disable tool. If it is processor problem as admitted by lg for 505 to 507 serial number series.

Search it use 812 file big core disable tot, flash it using lgup to disable cores then try to start.
[T-Mobile LG G4] hotsamfisher:
Can you please provide me with step by step method? as i'm not very deep into this **** :o
[T-Mobile LG G4] premiso:
It was v20i and I flashed v20h to brick it.

When I flash the singleimage.bin file, it comes to life and boot loops to the Secure Boot: 1006 error. I can see "Download Mode" when I do the volume down but it only shows for about 5 seconds then continues to bootloop. Appreciate the help, let me know if you need anything else.
[T-Mobile LG G4] divine1250:
There is your problem. That rom bricked me in the first place. if you flashed that after you made sdcard you replaced twrp on the sdcard with stock because that is a complete flashable rom including recovery. what you should do is either flash twrp again or redo sdcard to get back into recovery. Once you get back into recovery find and flash 20i debloated+rooted rom and from there flash h811 20o kdz and LGUP will do its thing perfectly. This is why alot of people are getting wrong kdz errors in LGUP. Everything depends on what rom you are on before using LGUP. let me know if this helps because i had all these problems posted here and overcame them with my method.
[T-Mobile LG G4] jam1445:
Stuck on LG logo is normally referred to as bootloop which is very popular in g4. Also in severe cases it is unrepaiable unless you get your motherboard changed.

I wish that you find a solution but be prepare for the worst