yashsingh1/xdaforums huggingface dataset:
[G4 Q&A, Help & Troubleshooting] nipun1110:
Hey man...i don't know how to thank u enough for yr kindness that u r helping me. But listen, here a few facts. Did u see S3v3n's rom thread? He mentioned that don't try to flash his MM Rom yet in the locked bootloader phones coz it may damage the device. So if possible, can u please guide me where I can find those other files (apart from KDZ) for my device (h815t)? Coz everywhere I just find the KDZ files only for my device and I only flash that......:(
[G4 Q&A, Help & Troubleshooting] mevorach:
You are locked in your mind !!!

PLZ Just read my instructions !!

download all 4 zip files from here ( this is not s3v3n rom )http://downloads.codefi.re/autoprime/LG/LG_G4/H815/H81520A/ . those file are the original img files for your device . ( if you were manage to flash the 20a bootloader before tour phone go into boot loops so you do not have to do it again just the 3 ethers files . try to flash the boot.img first

extract the zip files (inside the zip files there is img files ) and place the img file in the ADB folder in your computer . put your phone into "download " mode and flash all 4 files .

like here : http://androiding.how/fix-missing-system-img-error-marshmallow-factory-image/

1. this is for all h815 devices ( t , p ... )

2 no need for bootloader unlocked !!

3 no need for root

4 no need for TWRP recovery

5 no need for any rom (s3v3n) (yet)

after your device will be fix just stay with the original 20a because your device (h815t) cnnot be unlocked yet and FF not always work
[G4 Q&A, Help & Troubleshooting] Indicious Flow:
Dude, you need to chill. In the first place, there's no way for you to get into Fastboot/Bootloader state without booting up the phone and adb-ing your way into it.

Secondly, in Download Mode, adb/fastboot commands doesn't work.

If it does work, I wouldn't be here looking through this thread for other possible methods to save such issues.
[G4 Q&A, Help & Troubleshooting] shudoha:
but i'm not upset ... just i said in all posts . i cant ... in the sense adb dont recognize my phone saw when i want to make kdz method . i have a issue
[G4 Q&A, Help & Troubleshooting] Charles Collins:
I am in a similar situation. I can only access the download mode. I have adb installed but PC does not recognise the phone so I cannot use fastboot to flash the files. I have tried using the flash tool but I get to 9% and it says it loses contact with the server. Any help appreciated.
[G4 Q&A, Help & Troubleshooting] mevorach:
In the first post he said that download mode is working so you have to deside.

Turn off the phone or take the battery out and then turn it while holding volume down and conect it to the computer . it will enter download mode

If adb commands not working this is computer matter because adb comands done with computer
[G4 Q&A, Help & Troubleshooting] shudoha:
dowload mode yes ... me too . but when you want use kdz method blocked at 9% said remove battery . unplug etc etc and retry . i did that too much time impossible and tested adb on maybe 5 different computer with different windows ... then is not the computer . is not the cable .. is not usb 2 or 3... there are no solution for the moment
[G4 Q&A, Help & Troubleshooting] mevorach:
You have to install lg h4 drivers before you use download mod . herehttp://xdaforums.com/g4/general/lg-g4-drivers-t3127648

Install this and then conect your phone and wait untill your computer recognizes your phone . you can check it in the device manager. You shouldn't see any yellow mark on lg phone

---------- Post added at 11:54 AM ---------- Previous post was at 11:50 AM ----------

Lg tools 2014 will not work for you with 20a.

The only way is adb . or wait for lg tools 2015

What is the error that you get when using adb ?

---------- Post added at 11:55 AM ---------- Previous post was at 11:54 AM ----------

Lg tools 2014 will not work for you with 20a.

The only way is adb . or wait for lg tools 2015

What is the error that you get when using adb ?
[G4 Q&A, Help & Troubleshooting] shudoha:
then first the driver its good ... i see my device in device manager ... bridge recognize my phone .. lg support tool too ... in adb ... device not found . i tried all port possible ... and all solution possible

---------- Post added at 11:07 AM ---------- Previous post was at 10:59 AM ----------

and you know i have this problem after installed twrp and flash the autoprime room .... then new room.... usb debuging option.... not possible saw i have not access at android ... then normal adb = device not found
[G4 Q&A, Help & Troubleshooting] mevorach:
Can you enter TWRP?

---------- Post added at 12:33 PM ---------- Previous post was at 12:27 PM ----------

Ok . i can see that you do not have access twrp
[G4 Q&A, Help & Troubleshooting] shudoha:
no ... when i go in hard reset ... the hard reset doesnt work ... boot loop again
[G4 Q&A, Help & Troubleshooting] mevorach:
I am sorry I couldn't help you .

If adb not recognize the device usually It is because of drivers .

If I were you , I would have format my computer install clean win7 install the latest lg g4 drivers and the latest ADB . enter download mode . turn it off by taking the battery out , while you put the battery back again press and hold volume up and connect it to your computer it should enter download mode ( http://www.androidexplained.com/lg-g4-how-to-boot-into-download-mode/ ) , check that the computer recognize it . you should see it under ports and modem . try also to change the lpt port to 47 and try again
[G4 Q&A, Help & Troubleshooting] Charles Collins:
Okay, I'm in download mode, can see Firmware Update.

In Device Manager under Ports [COM & LPT] I have LGE Mobile USB Serial Port [COM6]

Under Universal Sreial Bus Controllers I can see LGE Mobile Composite USB Device.

When I go into the platform tools folder I open a cmd prompt and type 'fastboot device' but nothing shows up.
[G4 Q&A, Help & Troubleshooting] TheBledard:
Exactly the same issue

Hi all,

I've exactly the same problem...Was on 20A (Android M), bootloader unlocked and bootloop... No access to ADB (I had access to it but before the bootloop) and no access to Fastboot...

I can turn my phone into the Download Mode, but still no ADB or Fastboot...

I'm following the thread to find a solution, thanks :)
[G4 Q&A, Help & Troubleshooting] shudoha:
i have already tried with another computer even with virtual machine . with xp 7 .8 etc etc . i boot in dl mod without problem ... but like i told you adb work only if you use usb debuging option like it was a new android install and im blocked on the boot loop ... i cant have access at android and put this option then i can clean 1 million of computer that will change nothing ....
[G4 Q&A, Help & Troubleshooting] mevorach:
Does the lg tools 2014 recognize your device ? if so try to get h81510e kdz and flash it with “CSE Flash” . change the port to 47 first

http://www.andromods.com/unroot-locking/lg-g4-back-to-stock-firmware-flash-tool.html
[G4 Q&A, Help & Troubleshooting] Charles Collins:
Hang on a minute, I've managed to get into TWRP. I pulled the battery out, pressed the power and Vol- buttons, then when LG screen appeared just took my finger off the POWER button and then pressed it again. Pressed the two YES buttons and now I'm in TWRP. So should I just flash those zip files for MARSHMALLOW now? Any particular order?
[G4 Q&A, Help & Troubleshooting] shudoha:
you are lucky when i do this i have just the factory reset . i did and nothing happend

---------- Post added at 01:24 PM ---------- Previous post was at 01:23 PM ----------

he recognized my phone for 815 20a then android 6.0 and rollback impossible for the moment
[G4 Q&A, Help & Troubleshooting] Charles Collins:
When you went through the factory reset and said YES to both questions, nothing happened? No sign of TWRP or anything else?

I managed to use this thread http://xdaforums.com/g4/development/stock-h815-20a-stock-images-kdz-t3232282 and looks like I'm sorted. I must have deleted system files or something. Hope you get it sorted.
[G4 Q&A, Help & Troubleshooting] nipun1110:
I am so grateful that you all people are participating in this thread. And [MENTION=4616813]mevorach[/MENTION] again saying thanking won't b enough for u. But as i am sick, i couldn't follow u guys in time. Now I am feeling a bit better, so let's come to the point.

1. My phone is H815T. And I can't see any available TOT files for it.

2. The link u gave me previously of 20e [MENTION=4616813]mevorach[/MENTION], is that for international open varient? I can flash open international 10e KDZ in my phone to make the software compatible with latest international updates which I did previously to use the custom ROMs and it was successful. And as far as I know, this is possible for any other varient which has H815 prefix to change the software. So do u suggest me to flash those files in my phone?

3. LG Flash tools 2014 doesn't support 20e KDZ for some reason as u know [MENTION=4616813]mevorach[/MENTION]. So cannot flash that.

4. ADB. I used to use HTC phones before. So this I know that to detect in "adb devices" command, we need to install the proper driver as well as USB Debugging in on the phone. Plus as much as I know (I may be wrong), fastboot is a part of unlocked bootloader, isn't it? My phone only has "download mode" and it's working properly in case of flashing KDZ. but how to push files in download mode through adb? The link u sent [MENTION=4616813]mevorach[/MENTION] was for Nexus devices. Those devices don't have download mode. So what do u suggest now?

If I am being annoying, please pardon me. But I don't want to make any more mistakes like i already did at the first time when my device was in bootloop. I cse flashed the firmware again at the very beginning when the problem started. If i didn't do so, i would have usb debugging on.

Anyway thanks for yr help. Bounty is still on as I said. So please help me and all the other guys having the issue.
[G4 Q&A, Help & Troubleshooting] mevorach:
I understand that you are on v10e and you can use lg tools and flashed the h81510e and h815t10b and it was able finishing the flashing but you still with bootlooping ?
[G4 Q&A, Help & Troubleshooting] nipun1110:
Yes

Or u can say stuck at the boot logo
[G4 Q&A, Help & Troubleshooting] Indicious Flow:
And I quote again and state this out.

In download mode, adb/fastboot doesn't work. The only way for it to work is to either adb your way into Fastboot/Bootloader Mode from usb debugging (which requires your phone to be working to do so), or deleting the laf.img to directly boot into Fastboot/Bootloader Mode, which is impossible at the moment due to 20A's bootloader closing most of the exploits used in the previous versions.

Just to clarify it to everyone out there. If it'd work I wouldn't be here stating it out to everyone.
[G4 Q&A, Help & Troubleshooting] shudoha:
yes adv device found
[G4 Q&A, Help & Troubleshooting] nipun1110:
How? Can u please tell me step by step what u did? Coz my one says "waiting for device"
[G4 Q&A, Help & Troubleshooting] shudoha:
yes and if you wait he told you ... device not found you will see i have not solution bcz since i installed android 6.0 im blocked . boot loop . kdz method impossible
[G4 Q&A, Help & Troubleshooting] nipun1110:
But u said "adb device found", so i thought u have the solution... Anyway let's see if anyone comes with any solution
[G4 Q&A, Help & Troubleshooting] shudoha:
no i told you you wait this message ... adb found device ... but you can wait 1 week if you want bcz never he can found with my problem
[G4 Q&A, Help & Troubleshooting] nipun1110:
Man I am having really hard time to understand yr English. Anyway i am still very positive that someone will help me out of this.
[G4 Q&A, Help & Troubleshooting] shudoha:
as the rollback is not possible we have to wait flashtool take the kdz .and is not for now . maybe in few days as in few weeks
[G4 Q&A, Help & Troubleshooting] nipun1110:
Probably my problem is a bit different of what u r thinking. I didn't try to flash 20e. In fact i did nothing but my phone stuck at bootloop. But as afterwards i flashed the kdz files and it didn't help, now i cannot even make my device detected in the computer via adb. :(
[G4 Q&A, Help & Troubleshooting] shudoha:
yes me my problem was to install autoprime files for android 6.0 . now i'm blocked and i cant do nothing . not kdz . not adb . not twrp etc
[G4 Q&A, Help & Troubleshooting] nipun1110:
I want to ask a qs to everyone...Was there any connection of bootloop with charging did u notice????
[G4 Q&A, Help & Troubleshooting] maydayind:
Two of my friends got bootloop issues the same week. Both had warranty and lg replaced mainboard's on both. Not rooted or anything.
[G4 Q&A, Help & Troubleshooting] nipun1110:
R u sure about the motherboard? Or they just replaced the devices? And what caused the bootloop of yr friends's devices do u know? anything with charging?
[G4 Q&A, Help & Troubleshooting] HappyPessimist:
I'm having a similar experience, which started yesterday afternoon:

Hello,

Yesterday, while I was using my phone, it restarted itself and has been stuck at a boot loop almost entirely since then. It has successfully booted up 2-3 times but will usually restart itself within 30-45 seconds of booting and then will be stuck in a boot loop again. When it has started up its usually after it has been bootlooping for a while. I have an H811 , I'm rooted and using xTreme Rom v2.0. I have had occasional random reboots here and there before but the phone always booted right up again without any issues. I haven't done anything with root/recovery since early September.

I've tried doing a factory hard reset without any luck. My phone booted up after I tried the hard reset and it was like the reset didn't happen. I can't boot into TWRP. I can boot into download mode and I tried to reset using kdz. It got to 100% but the the phone restarts and is back in the boot loop (then the lg flash tool gets an error and force quits). I've tried removing my sd and sim cards, I've tried swapping to a different battery, I've tried leaving the battyer out and letting the phone cool down. Nothing is working. I have noticed that when the phone is going to boot up correctly the full LG animation plays. When the phone is going to boot loop I only get a static LG Powered by android image.

Since I tried and failed to reset to stock using kdz, the phone no longer boots up past the LG screen. I've redownloaded the kdz file and tried to reset again with the same results. When I have it in download mode Windows recognizes the phone but it says there's an issue with the MTP driver. I've reinstalled the latest LG drivers and I still get that the MTP function isn't working correctly. Since I used kdz my phone has booted up once this morning. It showed the initial set up screen but got stuck about a minute later, restarted itself and has been boot looped since.

Any suggestions?
[G4 Q&A, Help & Troubleshooting] nipun1110:
please go http://xdaforums.com/showthread.php?t=3235058 and vote. noone can do nothing right now bro.
[G4 Q&A, Help & Troubleshooting] usmanxhmed:
Does this thread gives a clear message, people should think twice before messing (root, mod, rom) with their devices, specially those which are not well supported by manufacturer?
[G4 Q&A, Help & Troubleshooting] nipun1110:
Hey man....chill...ok? People who are a regular user of xda, most of them know the risks n benefits of rooting and modding ok? I myself have been using modded phones for over 5 years. So try to understand what me and other people are saying. There are guys who has completely stock phone that went into bootloops. Anyway if u don't know all the facts, no need to be mean to others ok?
[G4 Q&A, Help & Troubleshooting] dxbi9100:
i think the solution is Flash Tool 2015 or next update for it.
[G4 Q&A, Help & Troubleshooting] nipun1110:
Yes those having issues while flashing 20e KDZ, that will be most probable solution for them, which is supposed to come out in 2 days as Flash Tool 2016. But for those whose mobile got into bootloop for no reason, what will happen to them?
[G4 Q&A, Help & Troubleshooting] usmanxhmed:
brother i am not rude here, i just expressed my opinion only, mainly on lg as they are not making it easy or helpful for people to resurrect there devices, they should be more helpful, secondly risk of mod is getting more and more through the years, in past it should be one easy steps for most phones, there were not many variants either, it is getting tougher and more cumbersome with the passage of time, when it should be easier. thirdly i know any phone can get bricked any time without modding or even without using, we cant help it, but brother by watching the how tough it is to even root some variants, risk is being more and more specially for this phone, probably, i expressed my opinion, when the situation is not helpful, one should restrain him self, specially if he is a layman like me. or you mean i am not allowed to express my opinion.
[G4 Q&A, Help & Troubleshooting] nipun1110:
no I am sorry that I didn't understand u fully. actually I am also very upset on LG. They have built such a good phone theoretically, even practically also, but not mechanically. There is a hype that phone built before October 2015 have a change of faulty motherboard. But which phones are of those batch how will we know? My previous one is dead now. Probably because of this issue. Now I have bought a new one with warrenty. But because of that fear, i cannot even unlock the bootloader thinking my warrenty will be void in case if my this new device also cause problem. Shame on this LG. A guy like me cannot afford a phone again n again right? Anyway surely u can express yr opinion. My apologies if any harm done.
[G4 Q&A, Help & Troubleshooting] usmanxhmed:
faulty motherboard can be a valid chance, but how you are sure the new phone you bought was manufactured in this current month of october
[G4 Q&A, Help & Troubleshooting] Charles Collins:
I agree. I've never had a LG phone before. I have had a Nexus 4 and 5 and there is a superb toolkit that I've used on both to root and then flash custom ROMs. On getting the G4 I've been amazed how good the phone is but have realised unblocking the bootloader and rooting so early on was a mistake as I couldn't get any updates. That led me to try and find ways around that and ending up thinking I had bricked my phone. I'm not blaming LG or anyone else but myself. Flash Tool 2016 sounds interesting but I'll definitely think twice before trying to change anything again. G4 is simply too good a phone to mess up.
[G4 Q&A, Help & Troubleshooting] shudoha:
again and again .... you unlock your phone ... you flash ... you root ... is your responsability ... for your post about lg ... look all comment ... all guy made root or another thing on g4.....
[G4 Q&A, Help & Troubleshooting] nipun1110:
It's not. Most of the phones available in my country probably not new batch. Even my new one also of old batch. That's what making me worried. It's working fine right now. Suppose something happens like my previous one, after I unlock the bootloader, I will not b even eligiable to argue that no, it happened automatically, I did nothing.
[G4 Q&A, Help & Troubleshooting] nipun1110:
hey man, how u doing? listen I managed to go into fastboot mode. but I cannot flash anything because it says the device is locked. do u have any idea what to do? and do u know how to push files in internal storage using fastboot commands?
[G4 Q&A, Help & Troubleshooting] Culfa:
How you managed to go into fastboot mode ?
[G4 Q&A, Help & Troubleshooting] shudoha:
its possible only if you have access at your phone . without boot loop . you install adb . and send the commande for the fastboot . but if you have the bootloop . is not possible
[G4 Q&A, Help & Troubleshooting] Culfa:
If we successfully enter fastboot, the problem is solvable. Can you give more details?
[G4 Q&A, Help & Troubleshooting] shudoha:
the problem if you try you will see is not possible . because when you have the boot loop after put android 6.0 for example . adb tell you . device not found . then you cant do nothing anymore . you know too much people have this problem and tested too much thing . there are not solution as i told you. the only one solution its wait flashtool update and is not for now yet
[G4 Q&A, Help & Troubleshooting] Culfa:
Thank you, wait flashtool update..

How you managed to go into fastboot mode ? Details please ?
[G4 Q&A, Help & Troubleshooting] TheBledard:
Hi,

I think it's more about Bootloader Lock...You'll be able to fully use Fastboot once your device's BL is unlocked (but seems odd since generally speaking u can flash any official img through it...but this time i think that LG has opened the use of Fastboot for dev only, so having BL unlocked).

How did u managed getting into Fastboot mode? It's very useful for those like me have bricked their device after flashing and modding 20A FW...
[G4 Q&A, Help & Troubleshooting] shudoha:
exactly . saw you have flash 20A.... and bootloop after you cant go for the option usb debugging . something important for adb works . then you cant
[G4 Q&A, Help & Troubleshooting] Culfa:
Pff solution please :(
[G4 Q&A, Help & Troubleshooting] shudoha:
if you are under warranty . send at lg for repair or make like all people . wait the flashtool update but that can take a very long time
[G4 Q&A, Help & Troubleshooting] TheBledard:
Is anti-downgrade module really activated on H815 (has anyone ever succeded downgrading with this device?)? Planning to use an Octoplus Box to flash official V10C firmware converted for use with Octoplus...

EDIT: Octoplus LG software can convert KDZ to OCT... so seems it could be the only way to force flash the H815 with the 20A version for the moment...
[G4 Q&A, Help & Troubleshooting] shudoha:
octoplus already tried and useless for the moment with the october 23th version
[G4 Q&A, Help & Troubleshooting] Culfa:
Waiting problem solution :(
[G4 Q&A, Help & Troubleshooting] Culfa:
Sen_command.exe how to fastboot ?
[G4 Q&A, Help & Troubleshooting] shudoha:
you cant... you need adb . then if you have bootloop . and you cant have access at android you have not put usb debugging then fastboot cant recognized your smartphone . i told you there are not solution for the moment if you are softbrick . just be patient and wait
[G4 Q&A, Help & Troubleshooting] Culfa:
I'm waiting waiting...
[G4 Q&A, Help & Troubleshooting] shudoha:
maybe in 1 month or more .... lol
[G4 Q&A, Help & Troubleshooting] Culfa:
Ohaa, off pof afra tafra :-S
[G4 Q&A, Help & Troubleshooting] TheBledard:
I'm receiving my Octopus Box tomorrow with the activation SW...if someone need to unbrick near Paris (France), I can do it for few bucks (it's not an ad, just proposing a solution for an emergency repair).

But I'm still searching for an alternative solution as the aim is not to make everyone purchase such an expensive box...
[G4 Q&A, Help & Troubleshooting] shudoha:
i'm french too and saw the price of octopus box . i prefer send at lg sav for repair its less expensive
[G4 Q&A, Help & Troubleshooting] TheBledard:
The issue is that LG can refuse to repair it at all, even if you are ready to pay...and you'll have to pay the diagnostics fees (approx 30 €) to get your bricked device back...

For sure LG repair service will be cheaper...if they are ready to repair first :)
[G4 Q&A, Help & Troubleshooting] shudoha:
if you are smart no ... because even if i have unlocked my smarphone i said i have a problem after the ota on lg bridge and explain im old girl (saw the phone he is at my wife ) and i know nothing about smartphone they makes me a "devis" ... and for rooted device and repair its 90 euro and for just repair without rooted device its the the cost of delivery something as 10 euro he told me
[G4 Q&A, Help & Troubleshooting] TheBledard:
Thanks for the info, could you tell me how much the devis is if you have asked for? When you receive the reply of course ;)