Lg g3 d855 marshmallow no root, no download mode, no fastboot, detect as qualcom 9008 - G3 Q&A, Help & Troubleshooting

help me please,
lg g3 no download mode or recovery or fastboot
hi everyone, please help me to fix this lg g3
the problem is, my device has detected in device manager as qualcomm hs usb 9008
from the boarddiag, it show that my ap test, emmc, and sdram pass or in good condition
i have using boarddiag to flash aboot,primarygpt, laf etc,
the problem is after flash that thing, i still can't enter download mode, even i press vol up while insert usb cable to pc, my device still don't enter download mode, just LG logo and black screen and turn to qualcomm hs usb 9008 again, why ???
for information,
before this brick i use marshmallow, or i must use the laf of marshmallow again? because i use laf kitkat rom, 10e, if that so can you share laf.mbn from marshmallow v30b? i have laf.img from 30b but the problem i can't enter the fastboot mode to flash it
full chronology
before brick my phone is on marshmallow 30b, then my phone suddenly stuck at LG logo and don't enter the OS, after that i flash via KDZ, but stuck at 99% and i just unplug from pc, after pulled battery and connect to pc it blank and show lge androidnet serialport, then i short pin/ test point and become detect as qualcomm hs-usb 9008, after that i flash aboot, primarygpt, laf, tz , etc via boarddiag, it's successfully, but i still don't enter download mode, it just show LG logo for a moment then black lcd, and detect as qualcomm again
for information:
condition i don't root phone, and now don't enter download mode, fastboot or recovery.
please i will pay who can revive my lg g3

If your phone is furbished, you have to confirm your. Model by opening and looking at the board.
You are flashing 855 firmware but that might be any other model.

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LG G3 D855 secure booting error !!

hello All
i did something very very very bad
i was upon to downgrade my D855 from 5.0 to Kitkat but it stop on 17% in pc and 0% on the phone
it still like that for 40 min so i unplug USB and i restart the phone i just get message says (secure booting error) in the up left side of phone and after that black screen and LED (BLUE & RED) i can not get in to download mode but when i try i get this :
Qualcomm HS-USB QDLoader 9008 (COM41)
and when i try to enter to recovery mode i get had to do factory reset and same problem !
so anyone can help me with this ?
Thanks ..
any help plz
Hello.
Move your battery, then replace it.
Flash an official kdz from lg.com with LGflashTool and your phone will restart
Your device is Brick!!
Try to enter Download mode
Flash your device again with LG FLash tools(tot File) or KDZ
i found it holllllaaa
for everyone have this problem, on this link you can fix it
http://forum.xda-developers.com/sprint-lg-g3/general/guide-fix-hard-brick-recovery-guide-t3132359
i used KIZ file by the way
and i wish frm supervisor to close this subject and write solved on it
thanks.

LG G Pro E986 Stuck in boot loop, no recovery no download mode, Help

So yesterday i tried flashing super LTE lollipop and being the stupid person that i am i flashed the E980 version instead of the actual version E986 (which i found later by removing the battery :| )
When rebooting the phone the home button is constantly on while the screen backlight turns on and then off again and again.
No lg logo, no recovery and no download mode.
Only when i plug in the phone to my pc it detects it as lg androidnet usb serialport and not Qualcomm HS-USB QDLoader 9008 like in other threads. Can i still get stock rom back? help much appreciated.
Edit: Okay i don't know why but apparently when i pressed vol + and vol - simultaneously and then connected the usb to pc despite showing a black screen it actually was download mode because using Lgflashtools i managed to install stock jelly bean. And i thought i was full hard bricked :/
reserved.
mine is detected as Qualcomm HS-USB QDLoader 9008 but nobody has achived to get live my OGPro...
Have you found the required TOT file and DLL?
I am having the same problem with LG G Pro e98820c after flashing wrong rom and unplug USB during flashing process.
Now the phone is stuck at Brick qualcomm hs-usb qdloader 9008 mode. I have some tools such as Smart diagnosis tool, BoardDiag, Androidbrick, Qfil/QPST ....But I have no proper guide how to use them to unbrick qualcomm hs-usb qdloader 9008 mode.
Have you got a solution for your brick phone.
Thanks , Sho Thant.

LG G3 D850AT Bricked and Reset but continues to become bricked

I was trying to install TWRP on my LG G3 (D850) and somehow got it so it would only show up as a Qualcomm HS-USB QDLoader9008 Device on my pc with no screen on and no way to get to any DL Mode.
I followed the directions from http://lgg3root.com/lg-g3-root/how-to-unrootunbrick-lg-g3/ and used the LG Smart Boot Diagnosis Tool (1.3.1) to get it back to be able to boot but as soon as I run the LG Flash Tool again and it resets I'm back to the no screen and only being identified as a "Qualcomm HS-USB QDLoader9008 " device via USB. I have done this 3 times now and still getting the same result. I rerun the Anti RollBack software and then try to flash again but it always does the same thing.
Is there something I am missing?
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my lg h815 showing qualcomm 9008 mode :( any solution yet?

i was trying to update my lg g4 h815 to mm by LGUP tool after flashing file device rebooted then it never turn on. i remove battery and put back again and try to turn on but no use. it showing me qualcomm 9008 mode on device manager... please help me!

Dead LG G4, no recovery or EDL

Hey everyone
My LG G4 (H815) suddenly turned off when i was using it, and it showed no life when i tried to boot it up again. Its completely stock, no custom recovery or custom firmware is installed. I cant boot into fastboot or EDL mode. I tried the button combinations as well as the test point method but i just cant get it to enter any kind of recovery mode, the screen just remains black (no backlight either). I installed the Qualcomm HS-USB drivers and when i plug my phone in my pc it gets recognized by QFIL. I tried flashing the fimware but it always gives me the Sahara unable to read packet header error. Can anyone help me?
Thanks in advance.
Have you searched the forum and tried any of these ?
https://forum.xda-developers.com/t/guide-proper-h815-unbrick-through-qfil-files-included.3709212/
https://forum.xda-developers.com/t/...-unbrick-via-external-sdcard-no-qfil.3748946/
https://forum.xda-developers.com/t/lg-g4-h818p-h815-hard-brick-recovered-working.3703565/
https://forum.xda-developers.com/t/unbrick-lg-g4-9008-qualcomm-mbn-files.3574595/

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