Bricked LG G4c, how to unbrick. - LG G4c Questions & Answers

Hello, my old LG G4c restarting itself and saying kernel crash demigod crash handler.
I try to flash stock rom via LGUP but now its fully bricked, when I try to enter in dload mode say: boot verification fail cause different hash
and when lg logo appear on screen say "security error".
Can I fix this?

did you dind a solution?

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[Q] Stuck in CWM bootloop after upgrading from OTA

Hi
I have a LG G2 D802 and when I bought it, I rooted it and installed the latest official KitKat. But today, after receiving an OTA and accepting the upgrade, my phone is stuck in a CWM bootloop.
I tried several tutorials to restore a stock rom but none of them worked because the LG G2 is not recognized by Windows after installing the LG united drivers.
I also tried to use a generic driver so that I can connect to the phone with ADB but ... "adb devices" says "unauthorized device".
I also can't under download mode.
So I am really stuck.
Any help please !
I probably made the situation just worse, when I tried to install TWRP and CM11 ...
Now I have : "Secure Booting Error! Cause: boot certification verify" and after 10s, the screen goes black.
I can't connect to the phone from USB anymore. It is seen as "QHSUSB_BULK"
Lex008 said:
I probably made the situation just worse, when I tried to install TWRP and CM11 ...
Now I have : "Secure Booting Error! Cause: boot certification verify" and after 10s, the screen goes black.
I can't connect to the phone from USB anymore. It is seen as "QHSUSB_BULK"
Click to expand...
Click to collapse
Since your in qhusb_bulk mode you'll need to follow this guide to fix it.
Hi
Thank you, I am going to try this tutorial

Stuck in download mode !!! LG G2 [NOOB]

I was updating my software of my lg g2 with lg pc suite. Then it all crashed and I am stuck in the "Firmware Update". I already tried recovering it with recovery mode, it didn't do anything. Also tried this http://forum.xda-developers.com/showthread.php?t=2432476. But when i pressed the com41 my pc crashed. Also I couldn't the dll file for my device. Can anyone help me? :crying:

How can i unbrick my d805 secure boot error?

Hi, i have a brick phone.
I installed by twrp a stock lollipop italia that this rom before works perfectly in my D805.
The problem is that i installed D805 bootloader of Pro2V5 rom and the phone has bricked. Says secure boot error, but i can to enter in download mode, but the problem is that cannot flash any kdz but thats programs like flashtool, lg support etc not recognize the phone.
The modem driver has intalled correctly but the csc driver and lge android phone not (cannot install them).
When i connect the phone in lg logo and secure boot error, appears many drivers that says if i wish format. seem is qhsusb_bulk error (appears in management)
And i tried with flashtool and tot and appears waiting for connection and not move of this place
How can i to unbrick my phone?.
Any method??
Thanks you
********EDIT*****
I recently use SRK Tool to fix the drives, and looks fine, now not show many partitions and also not show secure boot erro, now oly appears lg logo with secure error and restart permanetly.
What can i do?

[GUIDE] Revive lg G3 from Brick (secure booting error)

i had a frustating week trying to fix my lg G3 d855 (italian) because of a bad recovery flash (i don't know how it happened)
and i wanted to share how i resolved it to everyone because i spent too much hours in front of my compiuter.
this was the condition of my phone:
1- doesn't boot normally, showing in the top left an errore message "boot certification verify" "secure booting error" then the screen turned off and the led started to blink red and blue.
2- doesn't boot to recovery, doing the same things as i said before.
3- when booting in recovery mode (by pressing volume up) my computer showed "Qualcomm HS-USB QDLoader 9008 mode", but the display of the phone was totally black.
4- lg flash tool seemed to not work totally saying "model information check fail.
5- boardDiag seemed to not work too saying "device was not found in dload trying flash programmer".
here it is how i resolved it:
i just followed this guide, using his BoardDiag modified by willcracker: https://forum.xda-developers.com/sprint-lg-g3/general/guide-fix-hard-brick-recovery-guide-t3132359
at first it seemed to not work :crying:, but after 5-6 times unplugging the phone and rebooting(do not give up!) BoardDiag the program started to work as it should:victory:
i think that it was a crucial step, because i tried boardDiag hundred times before but only this realese worked.
my sw version was "21a 16gb", but i used the "10a 16gb" .tot file that i found here and it worked well: http://downloads.codefi.re/wolfgart/LG_G3/D855
i followed all the steps (except to open the phone, because i was able to go in download mode with no problem) then my phone got stuck in bootloop, but i used lg flash tool 2014 found in this guide: https://forum.xda-developers.com/showthread.php?t=2785089
to choose the kdz file i insered my imei here : https://imei.guru/ and looked for my "Latest firmware version"
in this page i downloaded the .kdz file with the firmware version i found: https://lg-firmwares.com/lg-d855-firmwares/firmwares/
i hope i could be helpful to someone, see you
ps. sorry for my bad english

[HELP] Completely stuck in security error loop at boot. Phone is not recognized by PC

As I say in the title I have a LG G3 D855 and I was trying to root it and installt twrp but I completely screwed up.
After that I managed to go into the qualcomm bootloader and restore the phone following this tutorial https://forum.xda-developers.com/lg-g3/general/unbrick-lg-g3-qhsusbbulk-qualcomm-9008-t3072091, but I keep on getting security error loop.
I cannot enter download mode, therefore I cannot flash my rom again. I have tried already with the tot images from EUR and HKG, and still no improve.
Any experience/help on solving this?
Thanks in advance!

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