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] LG G3 without connecting more !!!

Hello friends,
I come across this forum as conceptualized ask for help to solve a problem I'm experiencing with my LG G3. I have a LG G3 D855 asiatica oringe and how much like customizations made ​​some changes, nothing that had not already been done on other devices I've ever had and never had a problem. Once you have downloaded the root Xposed, and some modules framework, using usually came after that, more to my surprise when making a frustrated attempt to install a font that I downloaded from this forum and try to install the app IFont, I realized that the machine began to take much to restart and the worst is that this delay was increasing and even though I desistalado some applications and the source itself, I realized that this delay only increased. Just to give you an idea, the last time I tried to restart took 48 minutes. I tried to go into recovery mode in various ways, in no more managed to get him into recovery. I tried to restore factory settings through and he was not called for more black screen and only the LED flashing blue and red. Please if anyone can help me I earnestly beg you pass me an email: [email protected] or answer right here.
Grateful.

try to get into recovery by powering the phone off. remove and reinsert battery. plug USB lead into USB 2 port on the computer. press and hold the volume up button. keep the button pressed while you plug in the usb lead to the phone. that normally gets in to recovery. (does not always work with a USB 3 port for me).
then flash kdz in "normal mode" using the instructions in another thread. or use the LG more support tool. (sorry, not able to search for the correct threads at the moment, need to log off for a couple of hours...)
Sent from my LG-D855 using XDA Premium 4 mobile app

Tutorial flash kdz
dex. said:
try to get into recovery by powering the phone off. remove and reinsert battery. plug USB lead into USB 2 port on the computer. press and hold the volume up button. keep the button pressed while you plug in the usb lead to the phone. that normally gets in to recovery. (does not always work with a USB 3 port for me).
then flash kdz in "normal mode" using the instructions in another thread. or use the LG more support tool. (sorry, not able to search for the correct threads at the moment, need to log off for a couple of hours...)
Sent from my LG-D855 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Please could you pass me a tutorial on how to flash via kdz?
Grateful.

tarponpesca said:
Please could you pass me a tutorial on how to flash via kdz?
Grateful.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2785089
Sent from my LG-D855 using XDA Premium 4 mobile app

dex. said:
http://forum.xda-developers.com/showthread.php?t=2785089
Sent from my LG-D855 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Even following the tutorial restoration via KDZ not had success, catering to more starts in less than 2% of a message to retry, or my device is stuck without being able to restore even via KDZ, does anyone here know of one restuara hint how the recovery mode LG G3?

you might want to do a clean reinstall.
Download the KDZ file (V10h or V10j) and try with the CSE flash option in LG flash tool.
boot into download mode (hold power up and insert USB into PC) and then hit CSE flash.
even if the tool says it's done, just wait - do not click Exit. The phone might still do the upload (check the progress on the phone itself).
Be careful about the version of the KDZ file you download - do not use a 16 GB version if you have a 32 GB phone!

Well folks,
I have an LG G3 D855'm having a problem during the restore process via the LGFLASH TOOL, follow the tutorial step by step over when it will begin restoring is no more than 2% and always the error message "retry", has changed the usb cable and the error still persists, you will not have to help me?
Grateful.

maybe you can try this?
http://forum.xda-developers.com/lg-g3/general/guide-unroot-ota-using-lg-pc-suite-pc-t2802286
Not sure if it works from download mode. Maybe try from recovery mode.

DonnyR said:
you might want to do a clean reinstall.
Download the KDZ file (V10h or V10j) and try with the CSE flash option in LG flash tool.
boot into download mode (hold power up and insert USB into PC) and then hit CSE flash.
even if the tool says it's done, just wait - do not click Exit. The phone might still do the upload (check the progress on the phone itself).
Be careful about the version of the KDZ file you download - do not use a 16 GB version if you have a 32 GB phone!
Click to expand...
Click to collapse
I'm finding some difficulty to download this firmware, so googled and only found via Mega anyway after downloading extract command when content is asking for a password? I do not know what password is! Do you have a link to download this firmware D855 V10h-TWN-XX?
Grateful.

tarponpesca said:
I'm finding some difficulty to download this firmware, so googled and only found via Mega anyway after downloading extract command when content is asking for a password? I do not know what password is! Do you have a link to download this firmware D855 V10h-TWN-XX?
Grateful.
Click to expand...
Click to collapse
an extensive list (albeit not complete) is here http://forum.xda-developers.com/showthread.php?t=2791761
I haven't seen any Brazilian ROMs and I'm not sure if flashing another region would affect 4G reception or not.
Your best bet is to try via the LG PC suite (link with tutorial in my previous post) or get the KDZ for you phoe from LG site:
http://csmg.lgmobile.com:9002/csmg/b...2.jsp?esn=<IMEI HERE>
You just need to replace the red text in the link with your IMEI (it is on the box or invoice).

DonnyR said:
an extensive list (albeit not complete) is here http://forum.xda-developers.com/showthread.php?t=2791761
I haven't seen any Brazilian ROMs and I'm not sure if flashing another region would affect 4G reception or not.
Your best bet is to try via the LG PC suite (link with tutorial in my previous post) or get the KDZ for you phoe from LG site:
http://csmg.lgmobile.com:9002/csmg/b...2.jsp?esn=<IMEI HERE>
You just need to replace the red text in the link with your IMEI (it is on the box or invoice).[/QUOTEFinally I managed to solve my problem, thanks a lot for your attention and for the tips.
Big hug and God bless you!
Click to expand...
Click to collapse

d855 bricked?

I'm in a bit of a pickle...
Phone is dead, I'm unable to wake it using any method, however PC sees the device being connected. I have tried to restore TWRP backup which was completed correctly but then phone stuck and failed to wake up again. I have tried to unbrick it using the LG flash tool and dll +tot files however this method fails each time -with factory model check error - and download fail notification. Right now im waiting for kdz file to download (im using the tool checking my imei to select correct one) but it takes ages with my internet.
Anyone has any ideas? Am i doomed?

Hi
Happened to me also. I got out of it by using LG flash tool and clicking on options and selecting restore recovery. It puts it back to stock and you then need to reroot etc.
Stransky
Sent from my Desire 816 using Tapatalk

Stransky said:
Hi
Happened to me also. I got out of it by using LG flash tool and clicking on options and selecting restore recovery. It puts it back to stock and you then need to reroot etc.
Stransky
Sent from my Desire 816 using Tapatalk
Click to expand...
Click to collapse
Options? On mainstream there isn't any. Is it on the 2nd screen after adding the kdz?

Current progress
Phone:
No download mode
No boot on the phone
Device acts dead - only visible on my pc (serial port LGE)
PID and IMEI not available to read using LG flash tool 2014
Tried
Loading KDZ file - connection failed
using tot and dll with flash tool - Failed to connect to device
Read something about laf.img using adb... Anyone has any other ideas? Funny enough when I was searching forums I was not able to find more info about cases when device is not waking up at all. but now i see few very similar threads around? Possible flaw somewhere?

Please take a SC of your device manager...

ScAvEnGeR(PHC) said:
Please take a SC of your device manager...
Click to expand...
Click to collapse
Here you go:
https://drive.google.com/folderview?id=0B-PcKi2bLtK_X2RyZGNxdXBHVnM&usp=sharing
thanks!
(actually android device is gone now from the list - it was visible when i was installing the drivers - strange?)

quintaar said:
Here you go:
https://drive.google.com/folderview?id=0B-PcKi2bLtK_X2RyZGNxdXBHVnM&usp=sharing
thanks!
(actually android device is gone now from the list - it was visible when i was installing the drivers - strange?)
Click to expand...
Click to collapse
Thank God it is showing a serial port, try flashing with LG tools 2014, let me find a fix for your download error...
EDIT: Is your phone by any chance plugged into a usb 3.0 port? If yes then please plug it in a usb 2.0 port and try again...

I hope you are right. Screens hots should be updated same link:
https://drive.google.com/folderview?...nM&usp=sharing

Laptop has no usb3.0 so im safe there. Tried 3 cables as well. Not sure what was it shown it was I think Android device but it is no longer there. Just the com port. Lge

@quintaar
Sorry my bad. I should have said LG Mobile support tool. If you have it click on the options and select Upgrade recovery.
Stransky
Sent from my LG-D855 using Tapatalk

Stransky said:
@quintaar
Sorry my bad. I should have said LG Mobile support tool. If you have it click on the options and select Upgrade recovery.
Stransky
Sent from my LG-D855 using Tapatalk
Click to expand...
Click to collapse
It might be the PC (work pc at the moment and some IT limitations on it) however drivers installed ok, software confirms that I have latest software on my device - when phone is connected to the pc. After running Recovery Upgreade, it gets problem with comunication between the pc and mobile. in troubleshooting asks to power on the mobile (which I cannot do) before retrying. Also I have installed LG usb driver from outside as options coming with this software seem to be for really old models?

A thing I tried with another G3 was to connect the phone to the PC without the battery and then insert the battery, disconnect from phone and then remove battery again then insert and hold volume up and connect the USB to the phone again and it went into download mode and allowed the use of LG support tool as before.
Its worth a try!!
Stransky
Sent from my LG-V500 using Tapatalk

Stransky said:
A thing I tried with another G3 was to connect the phone to the PC without the battery and then insert the battery, disconnect from phone and then remove battery again then insert and hold volume up and connect the USB to the phone again and it went into download mode and allowed the use of LG support tool as before.
Its worth a try!!
Stransky
Sent from my LG-V500 using Tapatalk
Click to expand...
Click to collapse
No dice... so far. I'm back home in 2 days when i can try all of this again making sure that PC is not restricted from any functionality... although it does sucks to not to have a phone until then. If you get any ideas I'm happy to try it as well.. as not like i have anything to lose at this point.

Help! I think I bricked my LG G3 and now I am in a boot loop!

I decided to downgrade my LG G3 D851 from Lollipop 5.0.1 to the stock firmware.
I followed all of the steps of to downgrade my LG G3 D851 to the tee.
Towards to end, you have to restart your phone at the blue screen, this is what I did by taking out my battery when the big red "3" came up. It looked like it worked fine in the video right? But, to my luck, it just created a boot loop that I cannot get out of.
The reasons that I cannot get out of this boot loop are:
1. Because the LG G3 is so messed up, my computer will only recognize it as an unknown device even with the drivers installed.
2. The only way as far as I can see right now to fix it would be to follow the steps of the SAME video that caused this.
Any solutions guys?
Sorry if I am being vague, I'm kind of new around these parts and to rooting. If you need any answers I can surely provide.
Thanks!

Okay see if you can cancan get ti download mode. Take out your battery, put it back in, then hold volume up and plug in the USB. You should see a firmware update screen. Once there use lg flash tool to flash back to stock via kdz or tot.
Sent from my LG-D800 using Tapatalk

xmayhemreturnsx said:
Okay see if you can cancan get ti download mode. Take out your battery, put it back in, then hold volume up and plug in the USB. You should see a firmware update screen. Once there use lg flash tool to flash back to stock via kdz or tot.
Sent from my LG-D800 using Tapatalk
Click to expand...
Click to collapse
Hey! The reason that the boot loop was created in the first was BECAUSE I tried to flash back to stock. Also, even if I did try to do this, the PC would not recognize the device and would register it as an "unknown device" even if I have LG G3 drivers.

Do you mind sending a screen shot of what you see in the computer? Does your phone still go to download mode anyway?
Sent from my LG-D800 using Tapatalk

xmayhemreturnsx said:
Do you mind sending a screen shot of what you see in the computer? Does your phone still go to download mode anyway?
Sent from my LG-D800 using Tapatalk
Click to expand...
Click to collapse
Here is a screenshot: h t t p://i.imgur.com/5SUI9rR.png
The phone is perfectly able to go into download mode

May I know what version of windows you are running?

xmayhemreturnsx said:
May I know what version of windows you are running?
Click to expand...
Click to collapse
Windows 10

justinvan777 said:
Windows 10
Click to expand...
Click to collapse
Do you have access to a computer with windows 7 or possibly 8. From what I know WIndows 10 is not supported by lg drivers yet. This could have resulted in your brick, however you can try to uninstall the drivers and re install them.

should try running the lg suite on your win 10 machine in compatibility mode for an older windows

Stuck in download mode.

Help!! Please I tried to flash official lollipop F240L30c_00.kdz on my F240L but when I clicked ok, it verifies windows then says that "Connection to server failed. Try again in a moment.”
I dont know what to do, my phone only now boots into download mode I’m scared, please help. I did all the steps (Ithink).
HELP :”
<My phone boots up only in DOWNLOAD MODE even i dont press vol up + vol down then connect the usb to pc.
Please help me! I really need help!

just now. im stuck in 27% in LG Mobile Support Tool.
helppppp. i dont know what to do .

Use LG Flash tool and before starting disconnect from internet. Steps:
install lg drivers
enter to download mode (turn off, push vol up&down and plug usb)
copy kdz file into LG flashtool folder
disconnect internet
run lg flashtool (needs visual c++ runtime library), CDMA/diag/33000 click CSE Flash
no need to change language, wait until 100%

edddG said:
Help!! Please I tried to flash official lollipop F240L30c_00.kdz on my F240L but when I clicked ok, it verifies windows then says that "Connection to server failed. Try again in a moment.”
I dont know what to do, my phone only now boots into download mode I’m scared, please help. I did all the steps (Ithink).
HELP :”
<My phone boots up only in DOWNLOAD MODE even i dont press vol up + vol down then connect the usb to pc.
Please help me! I really need help!
Click to expand...
Click to collapse
If you get that warning, don't click or close that warning, the flasing is still running.
I always get it when flasing kdz on my F240L so I'm sure about that.
Sent from my LG-F240L using Tapatalk

irt118 said:
If you get that warning, don't click or close that warning, the flasing is still running.
I always get it when flasing kdz on my F240L so I'm sure about that.
Sent from my LG-F240L using Tapatalk
Click to expand...
Click to collapse
ahhhm. i dont get that warning again. im facing it stuck in 27% at "S/W Upgrade is in process" it took so long. it takes 30minutes and still not moving . what would i do ?
Sorry for my bad english

pckoloji said:
Use LG Flash tool and before starting disconnect from internet. Steps:
install lg drivers
enter to download mode (turn off, push vol up&down and plug usb)
copy kdz file into LG flashtool folder
disconnect internet
run lg flashtool (needs visual c++ runtime library), CDMA/diag/33000 click CSE Flash
no need to change language, wait until 100%
Click to expand...
Click to collapse
okay thankyou for reply. . let me try this.

edddG said:
ahhhm. i dont get that warning again. im facing it stuck in 27% at "S/W Upgrade is in process" it took so long. it takes 30minutes and still not moving . what would i do ?
Sorry for my bad english
Click to expand...
Click to collapse
Have you tried another usb port and cable? Also try cse flash.
Sent from my LG-F240L using Tapatalk

irt118 said:
Have you tried another usb port and cable? Also try cse flash.
Sent from my LG-F240L using Tapatalk
Click to expand...
Click to collapse
not yet sir. i only have one usb cable .

irt118 said:
Have you tried another usb port and cable? Also try cse flash.
Sent from my LG-F240L using Tapatalk
Click to expand...
Click to collapse
same issue with me. I got stucked at 25 percent. It was on jb tried to flash kitkat it stucked on download mode now. Any solution. I change usb cable but same response. May be tot can sort it out but no working link for f240s