Develop Bugs

[Q] Secure Booting Error! Cause: boot certification verify

Hello all,
Well, it's here... Unfortunately my phone got bricked last night
Can't boot into main screen and can't go to download mode anymore. The cause is, my phone was stuck when upgrading firmware and there's nothing to do about it except remove the battery, and then, BOOM!... "Secure Booting Error! Cause: boot certification verify"
Any LG G3 users here already experienced this problem?
I followed the solution on LG G2 sub-forum, but my ubuntu doesn't detect the port, although Windows recognized it.
If this happens to your G3 and you solved it, please share your experience
Thanks

haris182 said:
Hello all,
Well, it's here... Unfortunately my phone got bricked last night
Can't boot into main screen and can't go to download mode anymore. The cause is, my phone was stuck when upgrading firmware and there's nothing to do about it except remove the battery, and then, BOOM!... "Secure Booting Error! Cause: boot certification verify"
Any LG G3 users here already experienced this problem?
I followed the solution on LG G2 sub-forum, but my ubuntu doesn't detect the port, although Windows recognized it.
If this happens to your G3 and you solved it, please share your experience
Thanks
Click to expand...
Click to collapse
Help me too

haris182 said:
Hello all,
Well, it's here... Unfortunately my phone got bricked last night
Can't boot into main screen and can't go to download mode anymore. The cause is, my phone was stuck when upgrading firmware and there's nothing to do about it except remove the battery, and then, BOOM!... "Secure Booting Error! Cause: boot certification verify"
Any LG G3 users here already experienced this problem?
I followed the solution on LG G2 sub-forum, but my ubuntu doesn't detect the port, although Windows recognized it.
If this happens to your G3 and you solved it, please share your experience
Thanks
Click to expand...
Click to collapse
If Windows recognizes it then try using LGflashtool again.
Sent from my LG-D851 using Tapatalk

Skizzy034 said:
If Windows recognizes it then try using LGflashtool again.
Sent from my LG-D851 using Tapatalk
Click to expand...
Click to collapse
Windows does not recognize the phone...

Skizzy034 said:
If Windows recognizes it then try using LGflashtool again.
Sent from my LG-D851 using Tapatalk
Click to expand...
Click to collapse
Not at all.
Finally, I claimed my warranty with LG, and the motherboard got replaced.
It's all working now

You could have unbricked it... I've done that twice already

im stuck in this, how?

I'm stuck at the same thing since yesterday.
could you tell us the solution @nofait?
I've been researching about this and noticed one thing,
if I hold the lg combo (vol up + usb cable), and keep holding it until it passes the secure boot error and the screen becomes black,
my device (d855) goes to the Qualcomm Download Mode (it's detected as ''Qualcomm HS-USB QDLoader 9008'' on windows 8.1 x64)
Apparently, on that mode we could use Qualcomm tools (QPST) to reflash the bootloader and the matching laf image (the one that brings up the download mode)
so we could then flash any KDZ using LG Flash Tool.
To do so we need to extract the bootloader files, sbl1.bin, aboot.bin, rpm.bin, tz.bin, boot.bin, and laf.bin, from a tot/kdz firmware converting them to mbn format.
Then using QPST eMMC Download Tool, we load the partition table xml and 2 image files: the flash programmer file and the qcom boot image, which I'm still trying to figure out where to get them since I can't dump my own phone, and then we might be able to recover it.
I'm still looking into it and hopefully we can find a way.
I did not send my phone to lg service, yet, because I think they will take too long to fix it.

It happened to me a few days ago, but i had TWRP fully working so i could simply flash a ROM and then recover my things.
That thing about windows recognizing it as a msm8474 was a drivers issue (al least for me), i have a S5 too, i think that when i was tryng to get Heimdall working it changed the drivers (as you may know, s5 and g3 have the same board), so i just simply uninstalled it and then reinstall everything using .exe files from LG's website, after that windows 8.1 recognize it perfectly and i could flash KDZ without problems.
Other experience i had and that may help is what happened to me using an LGOG, couldn't boot, no recovery, no nothing, just trying to turn it on, it managed to get in fastboot mode (but with screen off and red LED all the time),from that point it was just about typing commands and flashing img to get it working

diego-ch said:
I'm stuck at the same thing since yesterday.
could you tell us the solution @nofait?
I've been researching about this and noticed one thing,
if I hold the lg combo (vol up + usb cable), and keep holding it until it passes the secure boot error and the screen becomes black,
my device (d855) goes to the Qualcomm Download Mode (it's detected as ''Qualcomm HS-USB QDLoader 9008'' on windows 8.1 x64)
Apparently, on that mode we could use Qualcomm tools (QPST) to reflash the bootloader and the matching laf image (the one that brings up the download mode)
so we could then flash any KDZ using LG Flash Tool.
To do so we need to extract the bootloader files, sbl1.bin, aboot.bin, rpm.bin, tz.bin, boot.bin, and laf.bin, from a tot/kdz firmware converting them to mbn format.
Then using QPST eMMC Download Tool, we load the partition table xml and 2 image files: the flash programmer file and the qcom boot image, which I'm still trying to figure out where to get them since I can't dump my own phone, and then we might be able to recover it.
I'm still looking into it and hopefully we can find a way.
I did not send my phone to lg service, yet, because I think they will take too long to fix it.
Click to expand...
Click to collapse
Hi,
You'll need to use a Windows 7 machine and the proper LG USB Driver (first post of this message) and change it to the COM41.
Do a BOARD DL and when the screen comes up and tells you to not touch it, ignore and press OK. Then press the power button and at the same type touch the "Normal +power". It should reboot and everything should be fine
Cheers!

nofait said:
Hi,
You'll need to use a Windows 7 machine and the proper LG USB Driver (first post of this message) and change it to the COM41.
Do a BOARD DL and when the screen comes up and tells you to not touch it, ignore and press OK. Then press the power button and at the same type touch the "Normal +power". It should reboot and everything should be fine
Cheers!
Click to expand...
Click to collapse
So,
Should I use windows 7 32 bit or is it fine with 64 bit?
Will I need a .TOT file and a DLL for my model ( D855P 16gb ) or can I use a KDZ file?
EDIT: ok so I tried it, but flash tool failed to get model information from the phone.
were you in download mode? I can't get to download mode here.

diego-ch said:
So,
Should I use windows 7 32 bit or is it fine with 64 bit?
Will I need a .TOT file and a DLL for my model ( D855P 16gb ) or can I use a KDZ file?
EDIT: ok so I tried it, but flash tool failed to get model information from the phone.
were you in download mode? I can't get to download mode here.
Click to expand...
Click to collapse
I send my phone to warranty service, where they changed all the motherboard with new IMEI and SN.
Hope that they don't ask for money to repair the phone.

hi all, having this problem as well. anyone resolve this?? Need help!

[/COLOR]
nofait said:
Hi,
You'll need to use a Windows 7 machine and the proper LG USB Driver (first post of this message) and change it to the COM41.
Do a BOARD DL and when the screen comes up and tells you to not touch it, ignore and press OK. Then press the power button and at the same type touch the "Normal +power". It should reboot and everything should be fine
Cheers! .
Click to expand...
Click to collapse
hi thanks for idea but could you explain in detail because is not working on my end. what screen comes up? i get ready in com41 . then download fail! (0 sec)
---------- Post added at 11:29 AM ---------- Previous post was at 11:26 AM ----------
paolotheking said:
I send my phone to warranty service, where they changed all the motherboard with new IMEI and SN.
Hope that they don't ask for money to repair the phone.
Click to expand...
Click to collapse
did you get it back?

prana_Sky said:
did you get it back?
Click to expand...
Click to collapse
Yes, with new mainboard.

prana_Sky said:
hi all, having this problem as well. anyone resolve this?? Need help!
Click to expand...
Click to collapse
I have the same problem did you find any solution ?
edit: solved somehow

[Q] PLEASE HELP! T-Mobile LG G3 Hard Bricked!

So today I tried flashing android 5.0 on my T-mobile LG G3 D851. I put it into download mode, started the flash and waited. My LG flash tool then crashed and closed. My phone was %6 through the installation however and was just left frozen after it crashed. I tried every way possible to restart it and get out of the screen while keeping it plugged in, but I couldn't...so I took out the battery and put it back in. Now nothing is turning on, I can't put it in download mode and the charging LED doesn't light up, etc. It's completely bricked....what do I do? I've already tried taking out the battery and waiting and plugging in the cord and then battery. Please help! I can't afford the insurance or another phone...
EDIT: Also the battery does have charge...although I don't know how long it will last.
EDIT 2: I just realized this flash was for the 855 variant..not 851. Does this mean that I am just screwed?

It means that you got expensive brick.
You cant enter into download mode or recovery?
Probably only help is jtag. Find someone who can do that.

Sounds like someone has learned a very expensive lesson! Have you tried to factory reset it?

Yeah JTAG is all you got if no download mode
Sent from my LG-D855 using XDA Free mobile app

joshmccoyy said:
So today I tried flashing android 5.0 on my T-mobile LG G3 D851. I put it into download mode, started the flash and waited. My LG flash tool then crashed and closed. My phone was %6 through the installation however and was just left frozen after it crashed. I tried every way possible to restart it and get out of the screen while keeping it plugged in, but I couldn't...so I took out the battery and put it back in. Now nothing is turning on, I can't put it in download mode and the charging LED doesn't light up, etc. It's completely bricked....what do I do? I've already tried taking out the battery and waiting and plugging in the cord and then battery. Please help! I can't afford the insurance or another phone...
EDIT: Also the battery does have charge...although I don't know how long it will last.
EDIT 2: I just realized this flash was for the 855 variant..not 851. Does this mean that I am just screwed?
Click to expand...
Click to collapse
Did you manage to unbrick your G3?

Neurom707 said:
Yeah JTAG is all you got if no download mode
Sent from my LG-D855 using XDA Free mobile app
Click to expand...
Click to collapse
Not necessarily. This might work in his situation
http://forum.xda-developers.com/showthread.php?t=2582142

itsbighead said:
Not necessarily. This might work in his situation
http://forum.xda-developers.com/showthread.php?t=2582142
Click to expand...
Click to collapse
The linked solution works only if the device shows some signs of life - atleast a boot logo.
i have a D851 that a friend bricked. She tried upgrading to Lollipop and flashed the AT&T baseband on this TMobile version. The result is a hard bricked device which does not even seem to power on. Shows no signs of life, except when connected to a windows pc. It shows up as 'LG Androidnet USB modem' in the device manager. No boot logo, recovery, or download mode. Fortunately she has IMEI and twrp backups for this phone (boot, efs1, efs2, radio, rpm, tz). I did some research on JTag solutions. Unfortunately, none of the boxes support the D851, yet.
Any ideas on how to recover this device would be greatly appreciated.

majesticpark said:
The linked solution works only if the device shows some signs of life - atleast a boot logo.
i have a D851 that a friend bricked. She tried upgrading to Lollipop and flashed the AT&T baseband on this TMobile version. The result is a hard bricked device which does not even seem to power on. Shows no signs of life, except when connected to a windows pc. It shows up as 'LG Androidnet USB modem' in the device manager. No boot logo, recovery, or download mode. Fortunately she has IMEI and twrp backups for this phone (boot, efs1, efs2, radio, rpm, tz). I did some research on JTag solutions. Unfortunately, none of the boxes support the D851, yet.
Any ideas on how to recover this device would be greatly appreciated.
Click to expand...
Click to collapse
If OP at least get QHUSB_BULK when he plugs it in it's better that he tries it
Sent from my iPad using Tapatalk

itsbighead said:
If OP at least get QHUSB_BULK when he plugs it in it's better that he tries it
Sent from my iPad using Tapatalk
Click to expand...
Click to collapse
Nope. Only LG Androidnet USB modem'

unbrick lg g3 please help

i flashed the wrong baseband and rom by mistake. how? well i rename it and got confused and mix it with other roms.well the point now is my lg g3 is bricked and i need help to get it back to life please anyone help

anyone? please help.

anyone please help i will give 40dlls on paypal to anyone how can get my phone working again.i will give the 40 bucks seriously

Can you get into recovery or download mode?

nothing just black screen no led either but the computer recognizes the phone on devices settings it shows LGE androidnet usb serial port.
i tried every guide here on xda to unbrick and a few on other sites and noghting

the only thing i did not try yet is a tool called lg smart boot diagnosis tool that theres nowhere to download only an xda member seems to have this tool but im waiting to see if he can share the tool or no

I dont have much experience with lg yet but if there is a flashing tool for it since u can still get the computer to read you just the tool and stock rom reflash and startover

i tried that already the problem i got now is the phone cannot get to be on download mode lg flash tool gets me an error that can't change to dlmode. it seems im running out of options maybe i should send my phone to lg for repair but i rather not i would like to try a little more before doing that

brigantti said:
i tried that already the problem i got now is the phone cannot get to be on download mode lg flash tool gets me an error that can't change to dlmode. it seems im running out of options maybe i should send my phone to lg for repair but i rather not i would like to try a little more before doing that
Click to expand...
Click to collapse
To put it simply if you cannot get to download mode, at this time you are sol. Maybe in the future if we get the qualcomm files you could fix it if your pc recognizes in one way or another it is connected under ports. But right now as we stand we do not have the files to recover from your type of brick.

thanks for you reply it seems that im gonna have to send it to lg for repair i bought it second hand so t-mobile will not help me with this.

Can you get adb to recognize it? You might be able to extract the laf.img and use adb to flash it back to your phone. Then you'll have download mode back.

no adb either i tried that. i try all kdz methods,flash tool with tot file and modded dll it gets stuck on can"t change to download mode. thanks for asking

the only method i did no try yet is the lg smart boot diagnosis tool that a xda member has but dont wants to share the tool

brigantti said:
the only method i did no try yet is the lg smart boot diagnosis tool that a xda member has but dont wants to share the tool
Click to expand...
Click to collapse
So... if you turn off your phone and then push VOL up and insert a USB doesn't go in laf mode?
Sent from my SM-N910F using XDA Free mobile app

Skin1980 said:
So... if you turn off your phone and then push VOL up and insert a USB doesn't go in laf mode?
Sent from my SM-N910F using XDA Free mobile app
Click to expand...
Click to collapse
no nothing happens just a black screen

Black screen might not mean its not doing anything

deron37129 said:
Black screen might not mean its not doing anything
Click to expand...
Click to collapse
This is true but two problems exist:
1) Correct me if this is wrong, if you brick your phone and don't automatically boot into fastboot mode there is no way to do it. You need to flash the full fledged laf.img so it is booted when you do the vol + plug in instead of booting to lg boot loader.
2) Even if his computer can recognize the phone what he has done probably makes it boot into QHSUSB mode and at this time we have no solution to fix it.
I have read somewhere on the g2 forum of fixing one of the types of QHSUSB bricks (they come in a couple of flavors) but I can't remember which one. I do remember he needed to flash the full fledged fastboot laf somehow then flash the aboot partition via fastboot. So if I was you I would do some digging in the g2 forums.

thanks everyone for trying to help.well i just send my phone back to lg for repair i will inform everyoneif lg repair my g3 or not thanks again

I am also facing this problem it's completely bricked when I connect device to computer it shows LGE ANDROIDNET SERIAL please help to solve this problem

On the computer or the phone

[Urgent] Bricked G3 D855

So my G3 16gb version just got bricked..
I had CM13 on it and it just shut down on me, I've had roms since the first day on this smartphone.
So I turned it back on (had to remove the battery), but then I realized that the screen was all black but the smartphone was still on... (weird)
So I took the battery off and waited for it to start and like after 1-2 minutes it just went black but the screen was still on.
Now it doesnt boot into TWRP, or download mode.
If i try to enter download mode, it just shows the LG logo, and after 5-7 minutes the download icon appears then goes to fastboot
If I just turn it on like if it wasnt bricked its stuck at the LG logo..
What can I do? I tried the KDZ flash but since I have no download mode I can't use it..
I also saw this link and didnt help me https://www.reddit.com/r/LGG3/comments/2qe5sr/in_need_of_serious_help_stuck_in_fastbootno/
The only thing that i havent tried was this method: http://forum.xda-developers.com/spr...y-download-t3053985/post60106965#post60106965
And the pin shortening one..
Theres nothing on COMs before anyone asks...
Please help me
EDIT: Downloaded files from here http://downloads.codefi.re/autoprime/LG/LG_G3/D855/stock_partitions/10A_16G and tried flashing with this guide http://forum.xda-developers.com/spr...y-download-t3053985/post60106965#post60106965
No luck, it gave me a bunch of errors writing to the memory : http://pastebin.com/raw/dMRvsnXr

If you did nothing to brick it then it is a hardware failure (eMMC is dead).

Nah.. cm13 and emmc bug = known
Check the cm13 forum. Can be fixed no worries. Basically d855 I unbreakable as I discovered lately.

Darkje said:
Nah.. cm13 and emmc bug = known
Check the cm13 forum. Can be fixed no worries. Basically d855 I unbreakable as I discovered lately.
Click to expand...
Click to collapse
Might be a bug that is right but trust me if you eMMC breaks and you can't download to it, it is a hardware problem.

neutrondev said:
Might be a bug that is right but trust me if you eMMC breaks and you can't download to it, it is a hardware problem.
Click to expand...
Click to collapse
Sure. But on the d855 there is a way out. By activating the USB quality 9008 mode. With the wire trick. So it's bricked, but it can be rescued.

Darkje said:
Sure. But on the d855 there is a way out. By activating the USB quality 9008 mode. With the wire trick. So it's bricked, but it can be rescued.
Click to expand...
Click to collapse
No you get it wrong. It's 2 different things. If you brick and your eMMC is fine, yes you can go to 9008. If you eMMC is damaged you can still go to 9008 but it will fail to write on eMMC and fail to recognize it.

I understand. But this error is known to happen with cm13. So nothing broken I would say. Had it all ready 2 time on cm13 never happened with stock based or cm12 for that matter.

H815 does not have any lights, No download, no recorery no system means NOTHING....

Hello,
I did a error my phone is LG G4 (H815) or i change with this ROM but this is for H850. Now my phone do not start and no light at all. Even in USB this is not recognized !!!!
I try to used :
-SALT tools,
-LG Flashtools,
-LGUP
...
I was told to unbrick my phone but it still does not work. All lights are OFF and USB is not recognized.
Then i used QFIL to worked correctly but ... it still does not work
I would appreciate is your could give me any help, Please ?

google99 said:
Hello,
I did a error my phone is LG G4 (H815) or i change with this ROM but this is for H850. Now my phone do not start and no light at all. Even in USB this is not recognized !!!!
I try to used :
-SALT tools,
-LG Flashtools,
-LGUP
...
I was told to unbrick my phone but it still does not work. All lights are OFF and USB is not recognized.
Then i used QFIL to worked correctly but ... it still does not work
I would appreciate is your could give me any help, Please ?
Click to expand...
Click to collapse
I think I responded to your post in one of my threads. If you flashed an H850 firmware on to the H815 the phone is bricked. Only fix would be replacing the motherboard.
Sent from my iPhone using Tapatalk

@hyelton : What you means the only fix would be replacing the motherboard. ?
Nothing else ?

google99 said:
@hyelton : What you means the only fix would be replacing the motherboard. ?
Nothing else ?
Click to expand...
Click to collapse
If you did flash wrong model firmware and the device shows no signs of life. Yes. Or an special box might can revive it which phone repair shops may have. But it wouldn’t be free
Sent from my iPhone using Tapatalk

google99 said:
Hello,
I did a error my phone is LG G4 (H815) or i change with this ROM but this is for H850. Now my phone do not start and no light at all. Even in USB this is not recognized !!!!
I try to used :
-SALT tools,
-LG Flashtools,
-LGUP
...
I was told to unbrick my phone but it still does not work. All lights are OFF and USB is not recognized.
Then i used QFIL to worked correctly but ... it still does not work
I would appreciate is your could give me any help, Please ?
Click to expand...
Click to collapse
Please test this.
Switch Phone off, remove Battery and put back, do NOT switch on! Press and hold the Power-UP Button and connect Phone to Pc via USB. Keep the Power-UP Button pressed. Does the Phone show something ? Did it vibrated shortly too ?
Foto-AG

google99 said:
@hyelton : What you means the only fix would be replacing the motherboard. ?
Nothing else ?
Click to expand...
Click to collapse
If you have not triggered ARB it is possible to enforce the 9008 mode (by bridging 2 PINs) and recover:
https://forum.xda-developers.com/g4/general/guide-proper-h815-unbrick-qfil-files-t3709212
Sent from my LG-H815 using XDA Labs