[Help] LG K420DS Hard Bricked - LG K10 Questions & Answers

Hello Respected Sir/ Guys.
I have LG K420DS device which hard brick because of messed up with aboot.img from device.
No Download Mode
No Display Just black Screen
But
Detected with LGE AndroidNet USB port while connecting with PC
Please help me to short points on motherboard to make detectable my device in Qualcomm HS-USB QDLoader 9008 mode to repair it. Or any one have idea to solve that problem???
Kindly help me guys.

Guys Needed bricked files please help me just run these command and upload that file.
busybox dd if=/dev/block/mmcblk0 of=/sdcard/backup.bin bs=1M count=200
and It's doesn't work than try this one:
busybox dd if=/dev/block/mmcblk0 of=/sdcard/backup.bin bs=1M count=200 if it does not work then change the last number (count=) to something larger and try it.

Same Problem here.
Bro, I got the same problem, please do post a fix.

same problem
Sriyank said:
Bro, I got the same problem, please do post a fix.
Click to expand...
Click to collapse
same here.. k10 f670l korean variant.. but can still boot to lg logo but but shows blue screen after that, can even go to downloadmode but unknown model when i used the LGUP..

arl8488 said:
same here.. k10 f670l korean variant.. but can still boot to lg logo but but shows blue screen after that, can even go to downloadmode but unknown model when i used the LGUP..
Click to expand...
Click to collapse
use this guide https://forum.xda-developers.com/lg-k10/how-to/guide-to-flash-official-firmware-lg-k-t3761728
---------- Post added at 02:48 PM ---------- Previous post was at 02:39 PM ----------
dhrtlockeroo9 said:
Hello Respected Sir/ Guys.
I have LG K420DS device which hard brick because of messed up with aboot.img from device.
No Download Mode
No Display Just black Screen
But
Detected with LGE AndroidNet USB port while connecting with PC
Please help me to short points on motherboard to make detectable my device in Qualcomm HS-USB QDLoader 9008 mode to repair it. Or any one have idea to solve that problem???
Kindly help me guys.
Click to expand...
Click to collapse
try this hardreset.info/devices/lg/lg-k10/download-mode/
to get to download mode and than use this guide https://forum.xda-developers.com/lg-k10/how-to/guide-to-flash-official-firmware-lg-k-t3761728
if you cant get to download mode by this try to connect your phone to computer and see if it charge than press vol up and keep pressing until you see download mode
i hope it work

Related

[Q] LG G3 How to Enter qualcomm 9008, qhsusb_bulk Mode

Could any one tell me how to force mobile to Enter qualcomm 9008, qhsusb_bulk Mode?
I'm stuck on LGe androidnet serial port and need to Enter that mode to unbrick my Phone...
I'll donate to any one who helps me
Please help.
mohamedsaber00 said:
Could any one tell me how to force mobile to Enter qualcomm 9008, qhsusb_bulk Mode?
I'm stuck on LGe androidnet serial port and need to Enter that mode to unbrick my Phone...
I'll donate to any one who helps me
Please help.
Click to expand...
Click to collapse
i have the same problem..please help..
Kucinkgirank said:
i have the same problem..please help..
Click to expand...
Click to collapse
You have to use testpoint method
More information here:
http://forum.xda-developers.com/lg-g3/general/unbrick-lg-g3-qhsusbbulk-qualcomm-9008-t3072091
Boot verification fail!cause : mismatch_sig_len issue LG G3 CAT 6 PLEASE HELP!

HELP! Fully Bricked LG G3 D855 Blank Screen

Hi,
I think I mistakenly flashing the Fastboot partition with all wrong version of Boot, Recovey and the rest of other partition.
Now phone is only turn with BLANK BLACK SCREEN, but USB Connection still active with COM assigned at port 41 (saw under device manager).
Anyone have idea how to flash it back to work, please .....
mKHMER
mkhmer said:
Hi,
I think I mistakenly flashing the Fastboot partition with all wrong version of Boot, Recovey and the rest of other partition.
Now phone is only turn with BLANK BLACK SCREEN, but USB Connection still active with COM assigned at port 41 (saw under device manager).
Anyone have idea how to flash it back to work, please .....
mKHMER
Click to expand...
Click to collapse
Search for latest stock rom 29 at the end of version number download an unzip to desktop.
Flash in Flashtool,at first take battery out and and flash only the bootloader uncheck everithing else !!!,when finisht disconect phone ,put battery in ,now in flashtool flash whole rom
Does your PC recognize your phone as Qualcomm HS-USB QDLoader 9008 or something else?
ludoke said:
Search for latest stock rom 29 at the end of version number download an unzip to desktop.
Flash in Flashtool,at first take battery out and and flash only the bootloader uncheck everithing else !!!,when finisht disconect phone ,put battery in ,now in flashtool flash whole rom
Click to expand...
Click to collapse
It dosn't recognize my USB driver, is there any driver needed to manually install? but if we put the battery it does [LGE AndroidNET COMx]
mkhmer said:
It dosn't recognize my USB driver, is there any driver needed to manually install? but if we put the battery it does [LGE AndroidNET COMx]
Click to expand...
Click to collapse
If PC doesn't recognize your device as Qualcomm HS-USB QDLoader 9008, you need to JTAG your device, or short pin.
Information about short pin;
http://forum.xda-developers.com/sprint-lg-g3/general/guide-fix-hard-brick-recovery-guide-t3132359
That look like we need to work direct on mainboard of the phone? anyway withou touching inside the phone?
mkhmer said:
That look like we need to work direct on mainboard of the phone? anyway withou touching inside the phone?
Click to expand...
Click to collapse
You have to disassembly your device.
My LG G3 is not recognised as stated above but as Android device LGE MOBILE ADB INTERFACE and i have no issues on Win 10.
The phone is also imidiatly detected by LG Pc Suite
ludoke said:
My LG G3 is not recognised as stated above but as Android device LGE MOBILE ADB INTERFACE and i have no issues on Win 10.
The phone is also imidiatly detected by LG Pc Suite
Click to expand...
Click to collapse
But when I remove the back cover, I see another stainless steel cover on those chip/board, how to remove it? Too risky!
http://forum.xda-developers.com/sprint-lg-g3/general/guide-fix-hard-brick-recovery-guide-t3132359/page8#post63750296
Here is a brioef guide i am also facing that issue from alst five days.. hope some master help to solve that situation
HELP!
Soooo... I have LG G3 D855 32GB, i think i installed wrong version of TWRP recovery (for another phone). Phone is not charging, so battery is dead. NO boot, NO recovery and NO download mode. PC does not recognize phone with LG drivers and QDLoader USB driver installed. I already do a "short pin" and nothing changes at all. I am out of solutions, please help me.
I already tried:
https://www.reddit.com/r/LGG3/comments/41wbo3/how_to_unhardbrick_your_lg_g3_jtag/
http://forum.xda-developers.com/sprint-lg-g3/general/guide-fix-hard-brick-recovery-guide-t3132359
http://forum.xda-developers.com/sprint-lg-g3/general/guide-how-to-restore-sprint-lg-g3-ls990-t2852042
ExtremeD722 said:
Soooo... I have LG G3 D855 32GB, i think i installed wrong version of TWRP recovery (for another phone). Phone is not charging, so battery is dead. NO boot, NO recovery and NO download mode. PC does not recognize phone with LG drivers and QDLoader USB driver installed. I already do a "short pin" and nothing changes at all. I am out of solutions, please help me.
I already tried:
https://www.reddit.com/r/LGG3/comments/41wbo3/how_to_unhardbrick_your_lg_g3_jtag/
http://forum.xda-developers.com/sprint-lg-g3/general/guide-fix-hard-brick-recovery-guide-t3132359
http://forum.xda-developers.com/spr...de-how-to-restore-sprint-lg-g3-ls990-t2852042
Click to expand...
Click to collapse
Your computer recognize any serial port when you connect g3
[email protected] said:
Your computer recognize any serial port when you connect g3
Click to expand...
Click to collapse
Computer doesn't recognize anything... I tried all 4 ports (2 ports 3.0, 2 ports 2.0), with original cable and non-original(Sony) cable.
ExtremeD722 said:
I tried all 4 ports (2 ports 3.0, 2 ports 2.0), with original cable and non-original(Sony) cable.
Click to expand...
Click to collapse
I mean any responce in pc device manager when u connect ur mbl
[email protected] said:
I mean any responce in pc device manager when u connect ur mbl
Click to expand...
Click to collapse
No, device manager detects nothing. I have windows 10 (i tried in normal mode and test mode). And if I connect my G3 Beat computer crashes because of LG driver.( I tried different versions of LG drivers and always the same crash(error)).
ExtremeD722 said:
No, device manager detects nothing. I have windows 10 (i tried in normal mode and test mode). And if I connect my G3 Beat computer crashes because of LG driver.( I tried different versions of LG drivers and always the same crash(error)).
Click to expand...
Click to collapse
I think crashing driver due to window .Try to connect ur device at window 7 .Hope device manager show serial port or qhbulk.I was have same problem my g3 but i resolve by short wire method.Good luck
---------- Post added at 03:01 PM ---------- Previous post was at 02:53 PM ----------
ExtremeD722 said:
Soooo... I have LG G3 D855 32GB, i think i installed wrong version of TWRP recovery (for another phone). Phone is not charging, so battery is dead. NO boot, NO recovery and NO download mode. PC does not recognize phone with LG drivers and QDLoader USB driver installed. I already do a "short pin" and nothing changes at all. I am out of solutions, please help me.
I already tried:
https://www.reddit.com/r/LGG3/comments/41wbo3/how_to_unhardbrick_your_lg_g3_jtag/
http://forum.xda-developers.com/sprint-lg-g3/general/guide-fix-hard-brick-recovery-guide-t3132359
http://forum.xda-developers.com/sprint-lg-g3/general/guide-how-to-restore-sprint-lg-g3-ls990-t2852042
Click to expand...
Click to collapse
Bro firt change ur window then install ur variant driver and qhbulk driver.After that if device manager show qhsub bulk port or something like then all problem will solve.If ur device manager show only lge serial port then use short wire method.:good:
[email protected] said:
I think crashing driver due to window .Try to connect ur device at window 7 .Hope device manager show serial port or qhbulk.I was have same problem my g3 but i resolve by short wire method.Good luck
Click to expand...
Click to collapse
I will try with other computers, but i have on all 3 computers win10...
Thx for respond !
ExtremeD722 said:
I will try with other computers, but i have on all 3 computers win10...
Thx for respond !
Click to expand...
Click to collapse
Then u should install window 7 because qhsub bulk will not dect on window 10.
---------- Post added at 04:11 PM ---------- Previous post was at 04:07 PM ----------
Bro when u install window 7 reply me if u get any issue.Be careful when u use short wire method because due to this method my g3 baseband and imei are unknow
[email protected] said:
Then u should install window 7 because qhsub bulk will not dect on window 10.
---------- Post added at 04:11 PM ---------- Previous post was at 04:07 PM ----------
Bro when u install window 7 reply me if u get any issue.Be careful when u use short wire method because due to this method my g3 baseband and imei are unknow
Click to expand...
Click to collapse
I will reply u soon. Why do u even need baseband and imei ?
Because my baseband. Unknown and imei is null

HELP my LG G3 D858HK 32GB is hard BRICKED

Please could an expert help me unbrick my device, I flashed lollipop autorec on Marshmallow:/ I tried willcracker but stuck in BoardDiag v2.99a with ERROR – MAX number of partition.
In my Device manager I get Qualcomm HS-USB QDLoader 9008. Been trying for a week now!!! HHHHEEEEELLLPPPPPPPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
HD2wally said:
Please could an expert help me unbrick my device, I flashed lollipop autorec on Marshmallow:/ I tried willcracker but stuck in BoardDiag v2.99a with ERROR – MAX number of partition.
In my Device manager I get Qualcomm HS-USB QDLoader 9008. Been trying for a week now!!! HHHHEEEEELLLPPPPPPPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Click to expand...
Click to collapse
Try to go download mode if you can...switch of your phone....hold volume up and connet the cable see if you able to enter dowload mode then flash a kdz....kdz would be different from your current version....for example if you have v30b flash v30c
i also have the same issue. im now looking for partition.txt file anyone has it?
Espinosa_Rommel said:
i also have the same issue. im now looking for partition.txt file anyone has it?
Click to expand...
Click to collapse
U can extract it from kdz via boarddiag
my phone had error when detect emmc , I couldn't find the way to unbrick it
Sent from my Optimus G using XDA-Developers mobile app
paul_zm said:
U can extract it from kdz via boarddiag
my phone had error when detect emmc , I couldn't find the way to unbrick it
Sent from my Optimus G using XDA-Developers mobile app
Click to expand...
Click to collapse
after i extract tot and kdz theres no partition.txt inside. boarddiag show "not responding"
Anik49 said:
Try to go download mode if you can...switch of your phone....hold volume up and connet the cable see if you able to enter dowload mode then flash a kdz....kdz would be different from your current version....for example if you have v30b flash v30c
Click to expand...
Click to collapse
No I can't get download mode but is seen in device manager as Qualcomm HS-USB QDLoader 9008. Every time I try BoardDiag v2.99a it stops with this, "ERROR – MAX number of partition". Only sign of life is red and blue LED flashing. If I pull the battery and connect USB without battery holding volume up it shows a connection symbol on the phone screen.
I am on the same page
Is there any fix for this error message ?
Thanks
Paolo

lg g4 h818p no recovery,no download,stuck on logo and no QDLoader 9008

https://www.youtube.com/watch?v=91iQV5hm-Yw
this video above is my situation. when i go to download mode it redirects to lg logo.
i cant find a way that my pc detects my lg g4.
when i check in device manager there is no device either qualcom or qdloader
HELP ME PLEASE!
up
august28th330 said:
https://www.youtube.com/watch?v=91iQV5hm-Yw
this video above is my situation. when i go to download mode it redirects to lg logo.
i cant find a way that my pc detects my lg g4.
when i check in device manager there is no device either qualcom or qdloader
HELP ME PLEASE!
Click to expand...
Click to collapse
I have the same problem, i used Win32 to write system.img then "EMMC_ROM1_032G74_1803230737_00000000_20000000" on SD card to enter download mode but i get bootlooped after like 5sec i get in dw mode.
I used QFIL but it fails all the time.
Idk what else to try...
up
to acess QDLoader 9008 you need to short two pings in the motherboard
el.adnane said:
to acess QDLoader 9008 you need to short two pings in the motherboard
Click to expand...
Click to collapse
so i should open my lg g4? is it safe?
august28th330 said:
so i should open my lg g4? is it safe?
Click to expand...
Click to collapse
its already wasted so there is nothing wrong in trying but if u dont know let someone else do it

LG K420DS Bricked File Bin

Hello guys my device hard bricked while trying to unlock bootloader with Marshmallow. Now there are
1. No Download
2. No Screen (Blank)
3. Not detecting with Qualcomm HS-USB QDLoader 9008 mode
But
Detecting device with LGE AndroidNet USB port
Researched alot but there are no success but finally I found something helpful but I need debrick file which I can get from working device so please anyone please just run this command and uploaded created file.
Command:
busybox dd if=/dev/block/mmcblk0 of=/sdcard/backup.bin bs=1M count=200
* if it does not work then change the last number (count=) to something larger and try it.
Please guys help me and Thanks in advance.
No one interested to help me???
hey
dhrtlockeroo9 said:
No one interested to help me???
Click to expand...
Click to collapse
hope someone could help us got same problem here.
but mine can still boot up to LG logo but after that blue screen..
can still go to downloadmode but always unknow with flashtool

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