Database Users

LG G2 boot certification verify - Critical error

Hello to all guys, I want to expose my problem hoping to find a solution and does not require the services that will surely take a long time.
Basically my LG G2 branded TIM week which started to give me problems to the camera, when I opened the black screen appeared and gave me an error message, the phone then crashed and was forced to restart.
Today so I decided to perform a reset + update using "flash tool LG 2014"
Drain everything and start the process of resetting.
Initially, the recovery tool appear to me instead of writing many question marks, and a progress bar.
The progress bar was also present on the phone, but arrived at about 10% it stops and returns to 0%.
On the computer instead tool gives me an error and terminates the operation.
So I decided to turn on the phone and I get a black screen with LG logo for about 5 seconds:
ERROR: boot verify certification;
[1200]
[1250]
[1300] Secure booting error!
[1350] Joined: boot verify certification
[1400]
[1450]
After I get this blank screen:
Critical error!
Demigod crash handler: critical error!
Press key to choose dload mode or reboot.
1) Volume up: DLOAD mode.
2) Volume down: Reboot.
If you choose DLOAD mode,
Please Following action.
1) DLOAD mode. Please connect USB.
2) Get the ram dump image using QPST configuration.
Board info
rev speed, serial pvs
Restart the phone does not do any good and is always shown on this screen.
By connecting your phone to the PC without pressing any key it is not recognized and the computer does not make any sound device connected.
As if I try to press the button Vol + and insert the USB (as it says on the terminal should enter download mode, but it is not because the phone is always on that white screen), the computer emits the sound of connection a new device but does not appear in the management discs or another.
Trying to use the tool to restore the phone screen remains the same, while on the computer advances to 4% and then stops.
Has anyone encountered the same problem or have a solution?
Sorry for my English, I use google translator.
Thank you all.

Unplug cable, press power button it should be turn off (don't pull your finger until LG Logo appear and gone). After that connect to pc while pressing Volume+ button. Try flash stock kdz again with flashtool.

khanjui said:
Unplug cable, press power button it should be turn off (don't pull your finger until LG Logo appear and gone). After that connect to pc while pressing Volume+ button. Try flash stock kdz again with flashtool.
Click to expand...
Click to collapse
I tried, but the load remains stuck at 4%.
Then he tells me to try again.

hectoros said:
I tried, but the load remains stuck at 4%.
Then he tells me to try again.
Click to expand...
Click to collapse
http://forum.xda-developers.com/lg-g2/development-d802/fix-lg-flash-tool-stuck-2-t3031112
http://www.theandroidsoul.com/how-t...it-stops-at-4-while-flash-kdz-firmware-80205/
Theese are all i found on web. Good luck...

khanjui said:
http://forum.xda-developers.com/lg-g2/development-d802/fix-lg-flash-tool-stuck-2-t3031112
http://www.theandroidsoul.com/how-t...it-stops-at-4-while-flash-kdz-firmware-80205/
Theese are all i found on web. Good luck...
Click to expand...
Click to collapse
Thanks
I tried both methods, but did not work: /
In the second link must WindowsŠ 7, I tried with WindowsŠ 8.1, but has not worked.

hectoros said:
Thanks
I tried both methods, but did not work: /
In the second link must WindowsŠ 7, I tried with WindowsŠ 8.1, but has not worked.
Click to expand...
Click to collapse
If you got guarantee for your phone, send them.

khanjui said:
If you got guarantee for your phone, send them.
Click to expand...
Click to collapse
Yes I have the guarantee.
Today I am going to the store LG Service.
Do you think I will pay?

hectoros said:
Yes I have the guarantee.
Today I am going to the store LG Service.
Do you think I will pay?
Click to expand...
Click to collapse
I don't think so. Tell them; I was updating and this happened. Or something like that.
Sent from my LG-D802 using Tapatalk

khanjui said:
If you got guarantee for your phone, send them.
Click to expand...
Click to collapse
khanjui said:
I don't think so. Tell them; I was updating and this happened. Or something like that.
Sent from my LG-D802 using Tapatalk
Click to expand...
Click to collapse
Okay, thank you very much

Bricked Leeco Le Pro 3?

It seems i have bricked a Le Pro 3 x727 trying to booting to a custom Rom. The screen is always off, no info no matters what. I have tried everything but it only vibrates. I have tried the vol +, vol- and power keys but it only vibrates and my PC doesn't recognize anything :/
What can I do? I'm missing something? I'm on Windows 10 BTW...
Thanks in advance!

edgarborras94 said:
It seems i have bricked a Le Pro 3 x727 trying to booting to a custom Rom. The screen is always off, no info no matters what. I have tried everything but it only vibrates. I have tried the vol +, vol- and power keys but it only vibrates and my PC doesn't recognize anything :/
What can I do? I'm missing something? I'm on Windows 10 BTW...
Thanks in advance!
Click to expand...
Click to collapse
Press power button 2 minutes or longer, sometime the phone will come alive I did it couple of times before.
If not work try this tread:
https://forum.xda-developers.com/le-max-2/how-to/guide-hard-brick-fix-qualcomm-hs-usb-t3492949

What happened what did you flash?
Sent from my LEX727 using xda premium

I have flashed an aboot file i found in this forum. But unfortunately i doesnt show anything in screen and my pc doesnt recognize it in any way...
No flashboot mode, no recovery and no edl mode...
It only vibrates no matter what combination of keys i press
Thanks!!

edgarborras94 said:
I have flashed an aboot file i found in this forum. But unfortunately i doesnt show anything in screen and my pc doesnt recognize it in any way...
No flashboot mode, no recovery and no edl mode...
It only vibrates no matter what combination of keys i press
Thanks!!
Click to expand...
Click to collapse
Volum + and - and power button go in the qfil mode
And go in this thread
https://forum.xda-developers.com/le-pro3/how-to/guide-unbrick-le-pro3-tested-t3622340

venezolano69 said:
Volum + and - and power button go in the qfil mode
And go in this thread
https://forum.xda-developers.com/le-pro3/how-to/guide-unbrick-le-pro3-tested-t3622340
Click to expand...
Click to collapse
Okey, now the phone has a red led steady when is plugged, so it's the first difference between yesterday, I'm charging it and then i will try to enter qfil mode... btw, my pc doesn't recognize my phone in any way... should the qfil show something in the phone screen?
Thank you very much!

edgarborras94 said:
Okey, now the phone has a red led steady when is plugged, so it's the first difference between yesterday, I'm charging it and then i will try to enter qfil mode... btw, my pc doesn't recognize my phone in any way... should the qfil show something in the phone screen?
Thank you very much!
Click to expand...
Click to collapse
You have to install Qualcomm driver to recognize the phone
https://forum.xda-developers.com/le-pro3/help/le-pro3-bricked-fastboot-recovery-t3487259

venezolano69 said:
You have to install Qualcomm driver to recognize the phone
https://forum.xda-developers.com/le-pro3/help/le-pro3-bricked-fastboot-recovery-t3487259
Click to expand...
Click to collapse
:good:

please help noob

hi all ,flashed rom without twrp and phone stuck in boot loop with logo ,power button plus volume up ,powers off then power button with volume down should get recovery ,not with this noobs phone, lol. I get qualcom crash mode with the reading attempted to kill ! exitcode=0x0000000 _______ do_exit ,any help would be gratefull ????

Can you access fastboot/bootloader mode? Try holding power button + volume up when the phone is already off. If you are able to get to fastboot mode then you can flash TWRP using ADB from there.

Use msm download tool

mingo_mgx said:
Use msm download tool
Click to expand...
Click to collapse
Thought my phone was a paperweight there lol and thanks for info ,used Msm download tool ,but for anyone else in my position,I found I had to disable signature verification on Windows 10 before pc found phone ,if that helps but it does work!

Can't exit EDL mode !! OP6T

After unlocking my bootloader i just rebooted it to flash twrp. But it did'nt rebooted. While connecting to PC, it show
Qualcomm HS- USB QDLoader - 9008 (COM 8)
i can't reboot or exit edl
please help?
i also tried msm download.
but after 16s it showing "Sahara Communication error"

I had the same thing happen to me with the msm download tool connection. Try to hold down the power button and volume down or up for a good 30 seconds. One of those combinations worked for me to make the device boot. Just a suggestion. Hope it helps.

someone made a USB QDLoader - 9008 tool for PC to flash phone stuck in this mode it's on xda hope that helps it did for lg g5 I flashed a test kernel on

alp47470 said:
After unlocking my bootloader i just rebooted it to flash twrp. But it did'nt rebooted. While connecting to PC, it show
Qualcomm HS- USB QDLoader - 9008 (COM 8)
i can't reboot or exit edl
please help?
i also tried msm download.
but after 16s it showing "Sahara Communication error"
Click to expand...
Click to collapse
Power plus volume up till the phone shuts off then start over. Msm tool does this sometimes to me as well just restart it and the phone.

thanks everyone for their help. I tried the button combination too but it was'nt working.
Something silly worked. I left the phone for hours. The entire battery died. After connecting it just booted again.. its funny.
Now i think i should delete this thread.

I can't wait
alp47470 said:
thanks everyone for their help. I tried the button combination too but it was'nt working.
Something silly worked. I left the phone for hours. The entire battery died. After connecting it just booted again.. its funny.
Now i think i should delete this thread.
Click to expand...
Click to collapse
I had your same problem but my OP6T is fully charged
Are there another solution for exit EFL mode?

Entering fastboot mode.
Same thing happened to me. Just hold the power button + Volume Up & down buttons until it vibrates

ogkillergreen said:
Entering fastboot mode.
Same thing happened to me. Just hold the power button + Volume Up & down buttons until it vibrates
Click to expand...
Click to collapse
Thanks, i exactly press VolUP + PWR button for 30 seconds untill the phone vibrate, if the phone is connected to pc IT DOESN'T WORK

Kratos_01 said:
Thanks, i exactly press VolUP + PWR button for 30 seconds untill the phone vibrate, if the phone is connected to pc IT DOESN'T WORK
Click to expand...
Click to collapse
Unplug the phone and press the PWR button + VOLUP and VolDOWN

Kratos_01 said:
I had your same problem but my OP6T is fully charged
Are there another solution for exit EFL mode?
Click to expand...
Click to collapse
Yes, hold the volume up + power key till it reboots automatically. :good:

this thread saved me today from having to wipe a perfectly working phone.
i booted into msm mode just see if i can use my non oneplus cable to flash phone using msm tool.
the phone showed properly in the msm tool but i didnt want to flash.
so i just read this thread and did what was told.
thanks for not removing this thread.

ogkillergreen said:
Entering fastboot mode.
Same thing happened to me. Just hold the power button + Volume Up & down buttons until it vibrates[/QUOTE
Came here for my OP7 Plus, Couldn't force it to reboot with just Power and Vol -. Had to do both Vol - and Vol + for it to reboot. Just came here to say thanks!
Click to expand...
Click to collapse

I just held the Volume up and Power button. For so long that my fingers were hurting ... lol it worked for me.

Con't exit EDL mode
alp47470 said:
Yes, hold the volume up + power key till it reboots automatically. :good:
Click to expand...
Click to collapse
I have also faced the same problem. I have tried all combination of keys to exit Edl mode without success.
The easiest way is disconnect the USB cable from PC/Laptop, connect the battery in case disconnected and connect to a power cable. Your mobile will start.

se7ensde said:
Power plus volume up till the phone shuts off then start over. Msm tool does this sometimes to me as well just restart it and the phone.
Click to expand...
Click to collapse
I have this problem too on the Oneplus 7T
I tried running adb commands but it says device unauthorized so I tried to use MSM tool but same error, but have to mention that before doing this the phone was taken for a physical LCD replacement, don't know if something was messed up during the replacement

Thank you @Fodderp, this helped me with my OP Nord.

ecompton59 said:
someone made a USB QDLoader - 9008 tool for PC to flash phone stuck in this mode it's on xda hope that helps it did for lg g5 I flashed a test kernel on
Click to expand...
Click to collapse
Where is it?

Kratos_01 said:
I can't wait
I had your same problem but my OP6T is fully charged
Are there another solution for exit EFL mode?
Click to expand...
Click to collapse
I had your same problem but my OP6T HELPPP

ogkillergreen said:
Entering fastboot mode.
Same thing happened to me. Just hold the power button + Volume Up & down buttons until it vibrates
Click to expand...
Click to collapse
i tried this but still no response

lvivek said:
i tried this but still no response
Click to expand...
Click to collapse
How long are you holding before giving up? You gotta hold that for a long time
Also make sure the phone is unplugged from the USB while holding
If there is sill no response it could be a dead battery. Plug it into the wall and let it charge for a while. Then unplug and press power, Vol +, and Vol - and hold it long. When you think it's been too long, keep holding.
It should take you to fastboot

Cannot unbrick [cannot enter EDL mode]

Hoping someone can shed some light. Rushing to root phone again to send back warranty replacement, in my haste my laptop died mid flash and now can only boot in Fastboot and Crashdump Mode.
I am attempting to restore to factory via the MSM tool but cannot for the life of me enter EDL mode.
With phone powered off and pressing the vol up and down keys while plugging into the PC, it only enters Fastboot mode
I have tried to do it with phone off, rebooting from Crashdump mode, from fastboot and it seems that no combination allows me to do so.
I have also tried just vol up and vol down. App loaded at the flash screen, not loaded, etc.
Thanks in advance

quy said:
Hoping someone can shed some light. Rushing to root phone again to send back warranty replacement, in my haste my laptop died mid flash and now can only boot in Fastboot and Crashdump Mode.
I am attempting to restore to factory via the MSM tool but cannot for the life of me enter EDL mode.
With phone powered off and pressing the vol up and down keys while plugging into the PC, it only enters Fastboot mode
I have tried to do it with phone off, rebooting from Crashdump mode, from fastboot and it seems that no combination allows me to do so.
I have also tried just vol up and vol down. App loaded at the flash screen, not loaded, etc.
Thanks in advance
Click to expand...
Click to collapse
What I did when I was in Crash Dump Mode was,
Press and Hold Power Off and Volume Up button and release when the screen goes off. Now your phone is switched off. Now to enter the EDL mode you need to press and hold volume up and volume down buttons at the same time...and then connect the mobile to pc while still holding the buttons. Done. MSM tool will detect your phone.
NOTE : Also keep the Device Manager window open on the PC while u connect the phone to pc and check if it shows up there.

quy said:
Hoping someone can shed some light. Rushing to root phone again to send back warranty replacement, in my haste my laptop died mid flash and now can only boot in Fastboot and Crashdump Mode.
I am attempting to restore to factory via the MSM tool but cannot for the life of me enter EDL mode.
With phone powered off and pressing the vol up and down keys while plugging into the PC, it only enters Fastboot mode
I have tried to do it with phone off, rebooting from Crashdump mode, from fastboot and it seems that no combination allows me to do so.
I have also tried just vol up and vol down. App loaded at the flash screen, not loaded, etc.
Thanks in advance
Click to expand...
Click to collapse
It always seems to take me several tries to get it right. I think if I don't hit the vol +/- keys right at the exact time that's the problem. Just be patient and keep trying. The first time I did it, it took me what seemed forever. Thought maybe my phone was broken.
Sent from my IN2025 using Tapatalk

rmiles7721 said:
It always seems to take me several tries to get it right. I think if I don't hit the vol +/- keys right at the exact time that's the problem. Just be patient and keep trying. The first time I did it, it took me what seemed forever. Thought maybe my phone was broken.
Sent from my IN2025 using Tapatalk
Click to expand...
Click to collapse
I have been doing custom roms since the old win ce devices....and yet you sir have been able to make me feel like an idiot haha. Thanks for this. you had it spot on!! thanks so much

Hello Folks. So i have found myself in this situation as well. MY phone wont go off and keeps restarting to CrashDump Mode. As such can't seem to get into EDL mode inorder to flash. Any tips? I have tried all the above methods nothing seems to work. Is there a different key combination or a fastboot command i can use to achieve EDL? Help a brother i'm going nuts. Device IN2020

HaronM said:
Hello Folks. So i have found myself in this situation as well. MY phone wont go off and keeps restarting to CrashDump Mode. As such can't seem to get into EDL mode inorder to flash. Any tips? I have tried all the above methods nothing seems to work. Is there a different key combination or a fastboot command i can use to achieve EDL? Help a brother i'm going nuts. Device IN2020
Click to expand...
Click to collapse
You just need to keep trying it. Make sure you hit vol+/- at the same time and hold for a few seconds, plug in the USB cable, then let off the vol keys. It's difficult to do and get right with two hands. Recently did it again as I wanted to upgrade to the 11 beta from a clean system. Seems like it took me forever to get it this time but eventually I did.

Use usb 2.0 port.

After using 2.0 instead of 3.0 and the phone connected stable for a while (after many tries)
able to finish the msm operation successful ..
But phone not booting .. getting black screen after 1+ logo
at this point I thought to clear cache but My phone is locked I cannot use any recovery .. I cannot even go into oneplu recovery LOL .. It seems like I am doomed

For me personally I could only get it to work on USB2.0 ports. On USB3.0 it just puts me back into fastboot mode or when it does go into EDL MSM tool just fails with a communication error immediately.
I kinda bricked mine as well messing around with GSI ROM's and flashing too hastily and to the wrong partition lol.

It has always worked for me with USB 2.0 port and non oneplus cable.
originable cable would not work for me on usb 3 or USB 2 port, but 3rd party cable start immediately with USB 2 port.

I've had the issue where EDL mode works..... for a few seconds, then the phone reboots.
Very frustrating!
The MSM Download Tool does spot the phone, but since the phone seems to reboot, I don't have enough time to do anything!
Any ideas why this is happening?

OneOfThePetes said:
I've had the issue where EDL mode works..... for a few seconds, then the phone reboots.
Very frustrating!
The MSM Download Tool does spot the phone, but since the phone seems to reboot, I don't have enough time to do anything!
Any ideas why this is happening?
Click to expand...
Click to collapse
You need to already hit start on msmtool BEFORE plugging in phone

1- start MSM tool (prepare the settings and choose the right oos)
2-keep the cable connected to one end (I prefere to keep it connected from the phone side first)
3-keep holding volume up/down for 3-4 sec and connect the other end of the cable to your PC
4-your device will be connected directly stop holding volume up/down and in msm tool press start wait for ≈300 sec
5-now your device should work as it was before

OneOfThePetes said:
I've had the issue where EDL mode works..... for a few seconds, then the phone reboots.
Very frustrating!
The MSM Download Tool does spot the phone, but since the phone seems to reboot, I don't have enough time to do anything!
Any ideas why this is happening?
Click to expand...
Click to collapse
After rebooting my pc, and fiddling with drivers, I got it all sorted finally.
Thanks for your help, folks.

Niranjan Bapat said:
What I did when I was in Crash Dump Mode was,
Press and Hold Power Off and Volume Up button and release when the screen goes off. Now your phone is switched off. Now to enter the EDL mode you need to press and hold volume up and volume down buttons at the same time...and then connect the mobile to pc while still holding the buttons. Done. MSM tool will detect your phone.
NOTE : Also keep the Device Manager window open on the PC while u connect the phone to pc and check if it shows up there.
Click to expand...
Click to collapse
This is a royal pita! I remember when it used to be fun....
Anyway, I've been trying every trick in the book, and then some, but shiznit just isn't going right! The holding of the up and down buttons would be easier if this was the pixel, but it is a tad hard to not mistakenly hit the power button on the other side.
The device manager shows the Qualcomm QDLoader and the msm Downloader is showing the infamous waiting for device... I've been at it for 8 straight hours and if there was a local OnePlus store that sold the international version of the OP8P, that's where I would be heading in a few hours.... It's really frustrating to say the least.
Anyway, when I'm in the bootloader, the device manager shows the Android phone, so I'm thinking that maybe I am in the edl mode when the Qualcomm port shows up, but like I said, the msm is waiting....

tried everything and it is constantly booting into bootloader. I even tried an adjusted fastboot script to boot into EDL but it still boots into bootloader. I have booted into EDL before on a OnePlus 7T, and I have tried multiple times by pressing the OnePlus 8 pro volume buttons at the same time, but always bootloader. Just to check, I tried doing it on my OP 7T again and it worked perfectly fine. Help????

I have had to flash stock 4 times because I land in crash dump mode and it has always been a tricky situation to get into edl.
What worked for me 100% of the time was following the steps in the youtube guide below.
From 2:30 onwards
Hope it helps

I had the same issues, but fixed once read comments as per above. Let me summarize what I did:
1. installed driver Qualcomm HS-USB QDLoader 9008 (I'm using Windows 10) - driver in a cab file should be unpacked using command expand (with proper switches) to preserve folders.
2. launched MSM DT and had it configured and then pressed Verify\Start, as EDL is available only for very short time - 2-3 secs with screen turned off.
3. as my phone was stuck in booting loop I was just keeping presses Vol+/- waiting for EDL to be entered, MDM will find the phone and start uploading data.
Just don't give up trying.

quy said:
Hoping someone can shed some light. Rushing to root phone again to send back warranty replacement, in my haste my laptop died mid flash and now can only boot in Fastboot and Crashdump Mode.
I am attempting to restore to factory via the MSM tool but cannot for the life of me enter EDL mode.
With phone powered off and pressing the vol up and down keys while plugging into the PC, it only enters Fastboot mode
I have tried to do it with phone off, rebooting from Crashdump mode, from fastboot and it seems that no combination allows me to do so.
I have also tried just vol up and vol down. App loaded at the flash screen, not loaded, etc.
Thanks in advance
Click to expand...
Click to collapse
Try different ports. My usb 3 port would force it into fastboot but usb 2 was fine.

What to do if the device doesn't have any usb 2.0 port?