[Q] Help please!!! LG G2 F320L doesn't boot. Boot certification verify. - G2 Q&A, Help & Troubleshooting

LG G2 F320L fails to boot after android update.
Device was not rooted.
Just from store.
-
After update of software, when device is started i get (picture in attachment):
Boot certification verify
Secure booting Error!
Cause: boot certification verify
-----
Tried to enter recovery mode (power + Volume down) - didn't
work.
Found out that pressing (power + Volume up and down) makes phone enter
some mode where everything is on korean (picture in attachment). After trying
pressing different buttons it didn't help also.
I tried "LG G2 Stock Firmware (Go Back to Stock)"
http://forum.xda-developers.com/showthread.php?t=2432476
but i couldn't enter download mode.
Then i tried "LG G2 F320K deep&hard brick! REPAIRED now."
http://forum.xda-developers.com/showthread.php?t=2476972
+
"[Guide]HOW TO get back to stock when your phone stuck in fastboot
mode" http://forum.xda-developers.com/showthread.php?t=2477595
but my phone doesn't enter fastboot mode!
I am out of ideas. Any help will be appreciated!!!

same issue here...and i can't get into download mode anymore...always boots in recovery and that's it. any idea what to do now????
PLEASE HELP..i go nuts!
btw....mine is rooted with customrom and twrp. so no warranty. ...so please !!!
as i have access to my twrp installation...is there a way to copy stuff to the internal storage of the g2 or can i connect a usb stick via dongle that i can mount in TWRP? ...so i can try to reinstall stuff?

upage said:
same issue here...and i can't get into download mode anymore...always boots in recovery and that's it. any idea what to do now????
PLEASE HELP..i go nuts!
btw....mine is rooted with customrom and twrp. so no warranty. ...so please !!!
as i have access to my twrp installation...is there a way to copy stuff to the internal storage of the g2 or can i connect a usb stick via dongle that i can mount in TWRP? ...so i can try to reinstall stuff?
Click to expand...
Click to collapse
Adb push
Sent from my ZTE Blade using XDA Premium 4 mobile app

Hey all! I've been fighting with similar errors for a couple days and I figured out what happened. I was stuck in fastboot mode the first time due to installing the d802 Cyanogen mod on my d800 AT&T phone on accident (wiki threw me off...) and the second time I attempted to flash a boot.img that was close but not quite right for my phone, causing the boot verify fail issue.
In the first case, my phone eventually went dead and I was able to enter download mode by holding volume up and plugging in the cable while it was still dead. In the second, I found that holding all buttons (volume up, down, and power) continuously eventually made it shut off completely. BUT you have to KEEP holding it, even after it reboots!! Once I got to that stage, the LG Flash software worked wonderfully. Once you get it reset, double and triple check you have the right rom file, then check a few more times just to make sure. Hope that helps!

sergeydavidoff said:
LG G2 F320L fails to boot after android update.
Device was not rooted.
Just from store.
-
After update of software, when device is started i get (picture in attachment):
Boot certification verify
Secure booting Error!
Cause: boot certification verify
-----
Tried to enter recovery mode (power + Volume down) - didn't
work.
Found out that pressing (power + Volume up and down) makes phone enter
some mode where everything is on korean (picture in attachment). After trying
pressing different buttons it didn't help also.
I tried "LG G2 Stock Firmware (Go Back to Stock)"
http://forum.xda-developers.com/showthread.php?t=2432476
but i couldn't enter download mode.
Then i tried "LG G2 F320K deep&hard brick! REPAIRED now."
http://forum.xda-developers.com/showthread.php?t=2476972
+
"[Guide]HOW TO get back to stock when your phone stuck in fastboot
mode" http://forum.xda-developers.com/showthread.php?t=2477595
but my phone doesn't enter fastboot mode!
I am out of ideas. Any help will be appreciated!!!
Click to expand...
Click to collapse
I had the same problem. here is theonly way to fix your problem http://forum.xda-developers.com/showthread.php?t=2582142

Partager.info said:
I had the same problem. here is theonly way to fix your problem http://forum.xda-developers.com/showthread.php?t=2582142
Click to expand...
Click to collapse
I probably souldn't have done that...
Code:
ERROR : BOOT certification verify
[830]-----------------------------------
[880]
[930]Secure booting Error!
[1030]
[1080]----------------------------------
That's the error message I get when I boot, this is after I hold the power down button for about 10sec. Then it goes back to black.
The solution seems to be here: http://forum.xda-developers.com/showthread.php?t=2582142 . Problem is that I used a kdz file to install my ROM and it doesn't have any img files.
When I connect my phone to my pc, a whole lot of local disks pop-up, of which I can acces only 1. This one has a lot of adsp.b00, adsp.b01, adsp.b02, etc files in it together with some other bXX (where XX is 01 to 26) files.

i haD usbhq_bulK and many drives all i had to do was flash tot.with flash tools if your doesnt go into download mode.. use srk toold to nuke download mode if it fails then open phone and short circuit the motherboard..
http://forum.xda-developers.com/lg-g2/general/lg-g2-unbrickable-fix-real-hard-brick-t2904404

Related

[Q] Failed Emergency Download Mode LG L5

After install the v20d baseband on my phone, the phone lost the IMEI number and when I try to enter the EDM appears this screen.
Any way to restore the EDM? I'm with CM 10 installed can access the emulator and recovery. I've tried installing other ROMS but without success. can someone help me?
rdazevedo said:
After install the v20d baseband on my phone, the phone lost the IMEI number and when I try to enter the EDM appears this screen.
Any way to restore the EDM? I'm with CM 10 installed can access the emulator and recovery. I've tried installing other ROMS but without success. can someone help me?
Click to expand...
Click to collapse
yeah, i had this problem too, you need to go to downlaod mode and install again the JB or ICS version, or what you need if you want to get your CWM back
Sabyn said:
yeah, i had this problem too, you need to go to downlaod mode and install again the JB or ICS version, or what you need if you want to get your CWM back
Click to expand...
Click to collapse
The problem is just that. When I go into download mode appears this screen! I just can not get into download mode.
rdazevedo said:
The problem is just that. When I go into download mode appears this screen! I just can not get into download mode.
Click to expand...
Click to collapse
are you sure is Downlaod mode and not emergency mode?
you tried to press both of + and - volume and after plug in the usb cable which is already connected to your pc?
After I updated my LG to v20B I also have a problem to get in Download mode to update it with v20D. I don't know what could be a problem. I noticed my phone was no longer rooted after I updated it with v 20B, but I am not sure if that might be the problem. Must I find the way to root my phone again to be able to get in Download mode the same way as before?
I managed to solve my problem getting into recovery and installing the baseband v10, with that he started to get into download mode. This happened every time I tried to install the v20d baseband. Just get it to work with the baseband v20a.
Hey, I'm having the exact same problem, the same screenshot you posted.
Can you explain how you managed to install baseband v10 in recovery mode? How can I even put baseband v10 in my phone, when I cannot even start it? To put it on my sd card and then install it from recovery?
I hope anyone will reply, because I'm desperate!
edit: ok, i managed to instal v10 baseband, but still cannot enter into download mode....
i press both volume buttons and power button and all that happens now is that my led buttons (back & options) blink once and that's all
Take out battery PRESS AND HOLD VOL- button now plug USB cable into it.
It will start in download mode without battery
From what i can see, you have entered fastboot mode. If you are lucky, you can flash some recovery through fastboot and try to restore the IMEI that way.
misschocolate said:
Hey, I'm having the exact same problem, the same screenshot you posted.
Can you explain how you managed to install baseband v10 in recovery mode? How can I even put baseband v10 in my phone, when I cannot even start it? To put it on my sd card and then install it from recovery?
I hope anyone will reply, because I'm desperate!
edit: ok, i managed to instal v10 baseband, but still cannot enter into download mode....
i press both volume buttons and power button and all that happens now is that my led buttons (back & options) blink once and that's all
Click to expand...
Click to collapse
use emergency mod, the combo is the one posted by struart
E615 in continous bootloop
I have this E615 in bootloop, not sure how it got to this point, but I suspect failed update or so.
Keep rebooting on the LG Logo and will not enter emergency mode, tried with all key combo with and without batter and USB cable
dannyogolo said:
I have this E615 in bootloop, not sure how it got to this point, but I suspect failed update or so.
Keep rebooting on the LG Logo and will not enter emergency mode, tried with all key combo with and without batter and USB cable
Click to expand...
Click to collapse
extract .kdz (look on xda)
download lgflashtool (look on xda)
flash using the tool
if you need help please quote me and i will help you
dannyogolo said:
I have this E615 in bootloop, not sure how it got to this point, but I suspect failed update or so.
Keep rebooting on the LG Logo and will not enter emergency mode, tried with all key combo with and without batter and USB cable
Click to expand...
Click to collapse
If you get into charging battery ( remove battery, remove usb cable, plug usb cable, insert battery ), you can use kdz to burn the firmware in diag mode, at least it works on LG E430, good luck.
DONE
Some1 told me to use P990 LG usb cable without battery, and it worked.
Phone went into Emergency mode and I flashed it with Vygis
Thanks

[Q] Rooted L7 boot error.

I rooted my L7 using some auto root program, installed a app deleter, deleted Google Movies
now, my phone died and when I try and turn it back on, I get an error message saying "Secure boot unsuccessful error:errorlogo"
i don't have any custom recover mods or whatever installed, and the normal method for booting into recovery mode " Volume up + home + power" doesn't do a damn thing.
is there a way to fix this?
if so, could you guide me through it in a very detailed way?
likehelly said:
I rooted my L7 using some auto root program, installed a app deleter, deleted Google Movies
now, my phone died and when I try and turn it back on, I get an error message saying "Secure boot unsuccessful error:errorlogo"
i don't have any custom recover mods or whatever installed, and the normal method for booting into recovery mode " Volume up + home + power" doesn't do a damn thing.
is there a way to fix this?
if so, could you guide me through it in a very detailed way?
Click to expand...
Click to collapse
try an HARD RESET
while loading on lg bootlogo press VOL- + POWER + HOME for some seconds
else
flash a firmware with KDZ
just try kdz in download mode, u should make nandroid backup before doing any thing!
Try booting into Emergency mode.
1. Hold the down volume key
2. Plug in usb to phone
That should automatically put you into Emergency mode. [Same thing as recovery.]
you can use this thread for l7 flashing with kdz http://forum.xda-developers.com/showthread.php?t=2486512
Are you alreadly OK ?

[Q] LG G2 bootloop, No recovery mode, only download mode

Hi guys, (LG G2, Rooted, had twrp but now its vanished?!)
I managed to get my LG G2 into a bootloop. I was replacing bootanimations and rebooting and testing them out. I finally tried this 1080p boot animation that looked sweet. Once the device rebooted it would show half the boot animation and then reboot. I had twrp installed but now every time i try to access it it just ignores the hotkeys as if it doesn't exist anymore. I can only get into download mode if a usb is plugged in.
All i need to do is flash TWRP again so i can flash the stock bootanimation back. I do not want to do a fresh install as I have many important files (i know i should have backed them up). I have tried to access my phone via adb using windows commandline tool whilst in download mode. however, adb doesn't find my device (I was going to attempt to push the stock animation back).
Please help me guys i need my phone to be working by monday as i have work! thanks in advance
SPBoss said:
Hi guys, (LG G2, Rooted, had twrp but now its vanished?!)
I managed to get my LG G2 into a bootloop. I was replacing bootanimations and rebooting and testing them out. I finally tried this 1080p boot animation that looked sweet. Once the device rebooted it would show half the boot animation and then reboot. I had twrp installed but now every time i try to access it it just ignores the hotkeys as if it doesn't exist anymore. I can only get into download mode if a usb is plugged in.
All i need to do is flash TWRP again so i can flash the stock bootanimation back. I do not want to do a fresh install as I have many important files (i know i should have backed them up). I have tried to access my phone via adb using windows commandline tool whilst in download mode. however, adb doesn't find my device (I was going to attempt to push the stock animation back).
Please help me guys i need my phone to be working by monday as i have work! thanks in advance
Click to expand...
Click to collapse
1. If you connect your phone to PC, what happens?
2. I also had trouble accessing TWRP, so I did the "Factory reset" button combo (Don't remember what it was) and when I slided to confirm, twrp booted. From there I think you have adb and can fix everything.
To get to TWRP, hold the power button until the phone turns completely off, then turn on the phone while holding the power and volume down buttons, then when the LG logo pops up, let go and re-press those buttons. When prompted for a factory reset, press the power button. Works every time for me.
Alone i used lg flashtoolnow,its ok. I didnt click factory reset i assumed it would delete everything? With lgflash i have restored system and everything is how i left it.
Sent from my LG-D802 using Tapatalk
alone-together said:
To get to TWRP, hold the power button until the phone turns completely off, then turn on the phone while holding the power and volume down buttons, then when the LG logo pops up, let go and re-press those buttons. When prompted for a factory reset, press the power button. Works every time for me.
Click to expand...
Click to collapse
worked like a charm, many thanks!
alone-together said:
To get to TWRP, hold the power button until the phone turns completely off, then turn on the phone while holding the power and volume down buttons, then when the LG logo pops up, let go and re-press those buttons. When prompted for a factory reset, press the power button. Works every time for me.
Click to expand...
Click to collapse
i cannot enter the download mode and the recov mode. I pressed it as your instruction said, but nothing happened.. what should i do ?
All the application force close, so i cannot enter the OS either..
xzork said:
i cannot enter the download mode and the recov mode. I pressed it as your instruction said, but nothing happened.. what should i do ?
All the application force close, so i cannot enter the OS either..
Click to expand...
Click to collapse
First off, you'll need to make sure your phone isn't plugged in or it won't work - I'm afraid if you can't enter recovery you'll have to go back to stock. http://forum.xda-developers.com/showthread.php?t=2432476
Sucess
alone-together said:
To get to TWRP, hold the power button until the phone turns completely off, then turn on the phone while holding the power and volume down buttons, then when the LG logo pops up, let go and re-press those buttons. When prompted for a factory reset, press the power button. Works every time for me.
Click to expand...
Click to collapse
Thank you, saved me day.
dear sir good evening sir plz plz help me my LG G2 is not working. still only black screen and show lg logo sir plz help me:crying:
PUNNU NAGI said:
dear sir good evening sir plz plz help me my LG G2 is not working. still only black screen and show lg logo sir plz help me:crying:
Click to expand...
Click to collapse
Try to flash the Kitkat baseband or if you are fully stock then i suggest you to flash the KDZ to go back to full stock(http://forum.xda-developers.com/showthread.php?t=2432476)
If you still have important data like pictures or what then do normal flash. Use the Android version you also had as stock and use that as KDZ. If you are not stock then can you reach TWRP?
and what did you do before that causes the black screen?
Stuck with the LG logo. Nothing happens in download mode
Hi All, not sure if this has been answered prior. This is what happen, I wanted to flash SOKP so I backup my phone and saved to PC using Titanium. I have TWRP installed.
Boot Into Recovery Mode and Wipe Data,System,Cache,Dalvik
I restart so I can flash the SOKP Rom and all I see on my phone is the LG logo. I try to restart using the Power and Up button, but it just sits in the download mode saying "Firmware Update" with no movement or action.
The phone is unable to turn off now. This is my first go at Flashing a Rom. Any help or suggestion would be greatly appreciated. Thanks in advance
my lg g2 is stuck on lg logo, and when i can enter download mode, and flash kdz my computer just dont detect my phone.
please help me :crying:
jungsora said:
my lg g2 is stuck on lg logo, and when i can enter download mode, and flash kdz my computer just dont detect my phone.
please help me :crying:
Click to expand...
Click to collapse
same here .... plz any solution?
justme!! said:
same here .... plz any solution?
Click to expand...
Click to collapse
Someone help, same issue.
sam_p15 said:
Someone help, same issue.
Click to expand...
Click to collapse
Someone help
Hey, I have the nearly same problem with my G2 running CM12 also installed recovery
But I can't reboot in recovery neither with the factory reset buttons, nor manually with SDK Manager, because the device is not found.
So I can just reboot and it shows the CM boot image, or get in the download mode.:crying:
Any suggestions?:fingers-crossed:
sam_p15 said:
Someone help, same issue.
Click to expand...
Click to collapse
I was in same stuation before 2 months send to warranty.
If rooted you can use adb shell with su and push partitions with "dd" while staring (stuck in lg logo)
Help!!
I have boot loop, only download mode accessible, device not found on adb. When I try LG FlashTool, instead of using the KDZ file I provide, it starts downloading some other firmware at times, and at times it says your software is up to date. What do I do? :|
How do i fix TWRP Bootloop on my HTC explorer a310e... ?
Dear,
How do i fix TWRP Bootloop on my HTC explorer a310e... ?
I hav custom cm11 Kitkat ROM installed on it...
but after I installed the rom, and again tried to reboot
into TWRP recovery, it is just stuck on the blue color
TEAMWIN screen... Please help how to fix it...!
USE method with .tot is working for me

LG D802/G2 cannot enter recovery mode at all

Hello
I am having some trouble with my LG D802 i been trying to recover phone but it refuses to enter recovery mode, the phone does show lg logo so phone isnt dead but i cannot enter recovery mode no matter what i do i pressed power and volume down until lg logo was displayed then i let go and pressed them both again but nothing happens lg logo appears again and phone goes black again no recovery page, has anyone an idea what coukd cause this as its very frustration and i need to recover phone urgently
graemek said:
Hello
I am having some trouble with my LG D802 i been trying to recover phone but it refuses to enter recovery mode, the phone does show lg logo so phone isnt dead but i cannot enter recovery mode no matter what i do i pressed power and volume down until lg logo was displayed then i let go and pressed them both again but nothing happens lg logo appears again and phone goes black again no recovery page, has anyone an idea what coukd cause this as its very frustration and i need to recover phone urgently
Click to expand...
Click to collapse
does it boot into system? not .
you tried all different ways pressing the keys.?
you may need to use skr tools to install twrp..
Try press Volume Up + Volume Down after the LG logo appears (this must happen only if you first press Power + Volume Down to power on the phone and get the LG logo)
raptorddd said:
does it boot into system? not .
you tried all different ways pressing the keys.?
you may need to use skr tools to install twrp..
Click to expand...
Click to collapse
The phone boots up but keeps rebooting itself which is why i was going to factory reset it i have tried all conbinations cant enter downlod mode either and usb debugging isnt enabled so i cant use skr tools but its original rom also

bricked lg g2 d802, stuck on lg logo, can't access download or recovery modes

Hi, i think i bricked my lg g2 d802. Long story short, the phone won't boot into recovery (stock, not custom recovery) or download mode. Even if i enter download mode, the phone would get stuck on the download mode with dots below it or something, basically it won't actually boot into download mode. The phone is stuck on the lg logo with the multicolor led flashing. All button combinations are working. Please please please do help me I'm really desperate to fix it since the last 3 days. Thanks.
farhanshaikh671 said:
Hi, i think i bricked my lg g2 d802. Long story short, the phone won't boot into recovery (stock, not custom recovery) or download mode. Even if i enter download mode, the phone would get stuck on the download mode with dots below it or something, basically it won't actually boot into download mode. The phone is stuck on the lg logo with the multicolor led flashing. All button combinations are working. Please please please do help me I'm really desperate to fix it since the last 3 days. Thanks.
Click to expand...
Click to collapse
Hi.
Download mode is when you press and hold the volume up key and plug the usb into a computer. Youll get a black screen with a box that says download. Nothing else will happen until you get the correct software.
If you can get it into the download mode, you will need the LG Flash tool, the LG drivers, the stock rom for your phone and about 15 minutes of your time.
LG Flash tool and LG Drivers from here ----> http://lgflashtool.com/
Stock Rom from here -----> http://storagecow.eu/index.php?dir=Xda%2FLG+G2%2FStock%2F
How to:
Install LG Drivers.
Extract the stock rom KDZ from zip file.
Run the flash tool and where it says "select KDZ file", browse to where you unzipped the stock rom you downloaded and select the file.
Hold down the volume up button on your phone and plug it into your computer by USB. Your phone will have a black screen and a blue box that says "Download". If it doesn't, you're not in download mode. Try again.
Once in download mode, Click "CSE Flash" in the flash tool
In the next window click "Start"
Now give it around 10 minutes to flash. You'll see the progress on the phone screen. Once done the phone will reboot and you'll be up and running again.
Hope this helps.
blueplasticsoulman said:
Hi.
Download mode is when you press and hold the volume up key and plug the usb into a computer. Youll get a black screen with a box that says download. Nothing else will happen until you get the correct software.
If you can get it into the download mode, you will need the LG Flash tool, the LG drivers, the stock rom for your phone and about 15 minutes of your time.
LG Flash tool and LG Drivers from here ----> http://lgflashtool.com/
Stock Rom from here -----> http://storagecow.eu/index.php?dir=Xda%2FLG+G2%2FStock%2F
How to:
Install LG Drivers.
Extract the stock rom KDZ from zip file.
Run the flash tool and where it says "select KDZ file", browse to where you unzipped the stock rom you downloaded and select the file.
Hold down the volume up button on your phone and plug it into your computer by USB. Your phone will have a black screen and a blue box that says "Download". If it doesn't, you're not in download mode. Try again.
Once in download mode, Click "CSE Flash" in the flash tool
In the next window click "Start"
Now give it around 10 minutes to flash. You'll see the progress on the phone screen. Once done the phone will reboot and you'll be up and running again.
Hope this helps.
Click to expand...
Click to collapse
Hi, thanks for your reply. But i fixed it using srktool method by shorting the capacitors.
As i said , i could not boot into download mode. Lg flash tool works only when the phone can boot into download mode afaik. Luckily, i was able to boot into qhsusb_bulk mode and fix the phone using srktool. Now i can boot into download mode. Anyways, i fixed it. Thanks for your help
help!
farhanshaikh671 said:
Hi, thanks for your reply. But i fixed it using srktool method by shorting the capacitors.
As i said , i could not boot into download mode. Lg flash tool works only when the phone can boot into download mode afaik. Luckily, i was able to boot into qhsusb_bulk mode and fix the phone using srktool. Now i can boot into download mode. Anyways, i fixed it. Thanks for your help
Click to expand...
Click to collapse
I'm very late but how did you short the capacitors??
annonmouse said:
I'm very late but how did you short the capacitors??
Click to expand...
Click to collapse
https://youtu.be/uoWUPnat5GQ
Make sure you find the proper ones. You need to remove the metal shield thing before shorting. It requires a lot of patience to short those caps properly. Once do you do it properly, the screen backlight should light up. Good luck

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