Database Develop

[Q] Verizon LG G2 Stuck in CWM Bootloop

Hey guys,
I accidentally selected the OTA that popped up on my phone while on a Stock ROM and now my Verizon LG G2 is stuck in a bootloop with CWM Recovery 6.0.4.4 I have tried to wipe everything and install a older CM ROM and Gummy ROM to see if that would get my phone to turn back on and it doesn't. I have researched many threads to see if there was a resolution for my issue, but everything that I tried did not work. I have a iMac and a Windows laptop and I have tried many things with Terminal and Command Prompt and nothing seems to work. I don't know if I am doing something wrong with ADB or if I am simply just missing other things, but I am trying to get my phone back un-rooted and back to stock to get my phone replaced under the warranty. PLEASE HELP!

Yokleezy said:
Hey guys,
I accidentally selected the OTA that popped up on my phone while on a Stock ROM and now my Verizon LG G2 is stuck in a bootloop with CWM Recovery 6.0.4.4 I have tried to wipe everything and install a older CM ROM and Gummy ROM to see if that would get my phone to turn back on and it doesn't. I have researched many threads to see if there was a resolution for my issue, but everything that I tried did not work. I have a iMac and a Windows laptop and I have tried many things with Terminal and Command Prompt and nothing seems to work. I don't know if I am doing something wrong with ADB or if I am simply just missing other things, but I am trying to get my phone back un-rooted and back to stock to get my phone replaced under the warranty. PLEASE HELP!
Click to expand...
Click to collapse
Try the LG tools for bricked G2. Its somewhere on these forums. All you have to do is plug up to a computer and flash the stock ROM with the tool.
Sent from my magic box.

GlitchedSoul said:
Try the LG tools for bricked G2. Its somewhere on these forums. All you have to do is plug up to a computer and flash the stock ROM with the tool.
Sent from my magic box.
Click to expand...
Click to collapse
I tried the LG Flash Tool on a PC, but it gives me an error message LG USB/Parallel Lock Key is not detected and when I hit OK, it pops up with a Login with the Country filled in with Republic of Korea, ID and Password are left empty. I don't know what to do from there.

Enter into download mode by turning off your phone, then hold vol + and plug it to your computer.
Download the official firmware for your device.
Download FlashTool.1.0.54
unzip FlashTool.1.0.54, open the folder and launch UpTestEX.exe
Select type:3GQCT
Phone mode: DIAG
Select kdz file: browse for your official firmware
Then click: normal web upgrade test
Then click: Upgrade start
a new window will show, chose english language. Country: korea, then click ok and wait untill the firmware installs.
Good luck.

Partager.info said:
Enter into download mode by turning off your phone, then hold vol + and plug it to your computer.
Download the official firmware for your device.
Download FlashTool.1.0.54
unzip FlashTool.1.0.54, open the folder and launch UpTestEX.exe
Select type:3GQCT
Phone mode: DIAG
Select kdz file: browse for your official firmware
Then click: normal web upgrade test
Then click: Upgrade start
a new window will show, chose english language. Country: korea, then click ok and wait untill the firmware installs.
Good luck.
Click to expand...
Click to collapse
I am unable to boot into download mode, unfortunately. That's where I get stuck every time.

Yokleezy said:
Hey guys,
I accidentally selected the OTA that popped up on my phone while on a Stock ROM and now my Verizon LG G2 is stuck in a bootloop with CWM Recovery 6.0.4.4 I have tried to wipe everything and install a older CM ROM and Gummy ROM to see if that would get my phone to turn back on and it doesn't. I have researched many threads to see if there was a resolution for my issue, but everything that I tried did not work. I have a iMac and a Windows laptop and I have tried many things with Terminal and Command Prompt and nothing seems to work. I don't know if I am doing something wrong with ADB or if I am simply just missing other things, but I am trying to get my phone back un-rooted and back to stock to get my phone replaced under the warranty. PLEASE HELP!
Click to expand...
Click to collapse
flash twrp and try this http://forum.xda-developers.com/showthread.php?t=2451696

datechnerd said:
flash twrp and try this http://forum.xda-developers.com/showthread.php?t=2451696
Click to expand...
Click to collapse
How can I flash TWRP when my phone won't boot? According to a post I read and a YouTube video tutorial I watched, they keep referring to turning on USB Debugging which I can not do.

Yokleezy said:
How can I flash TWRP when my phone won't boot? According to a post I read and a YouTube video tutorial I watched, they keep referring to turning on USB Debugging which I can not do.
Click to expand...
Click to collapse
ADB sideload

[Q] Soft Brick without Custom Recovery (Logs Included) - LG G Flex T-Mobile (D959)

I've had this phone for a few days and I bricked it by reverting my build.prop from this thread http://forum.xda-developers.com/showpost.php?p=55838361&postcount=2 . It is an unlocked phone T-Mobile D959 on 4.4.2. I was having lots of trouble and crashing apps so I decided to start fresh and replace with this file from the thread. After replacing, it does not allow me to boot. Factory hard reset does not work (since I believe it does not change build.prop). It shows Android mascot for ~10 seconds and then black screen. If I start phone normally the screen will boot LG logo then go to black with front notification light constantly flashing from cyan to green and looping.
I do not have a custom recovery and I can only access "Download Mode." I have tried the KDZ flashing with LG Flash Tool 2014 with LG_KDZ_FW-Update_OfflineFix. I keep getting an error at 2%/3% of the last step depending on the setting (3% on CS_EMERGENCY, 2% on EMERGENCY, 2% on DIAG). I am putting the phone on COM41 and tried both USA/KITKAT KDZ files.
Does anyone know what settings I need for this method?
I have also tried the LG Flash Tool 1.5 with TOT using a different variant's *.TOT file in hopes it would work long enough to boot/think of a new solution but this fails due to a cross firmware check.
I see that some people on this forum were able to do it then fix their phone after a few more steps. Someone used a .DLL from another firmware and the program let him flash. Does anyone know of any programs (or tricks to bypass cross firmware check) I can use to flash a different/wrong variant's *.TOT file?
This is a strange part of the 1st log file:
"[ 7:20:12] Cross D/L Fail, phone : LG-D959, binary : Unknown
[ 7:20:12] Download exception Error
[ 7:20:12] ¡Ú¡Ú ERROR REASON : LAF_ERROR_INVALID_INPUT_FILE"
FULL LOG FILES:
View attachment 2986866
View attachment 2986867

Make sure you have internet connection. And boot to "download mode." Plug your phone into your PC, open up the LG PC Suite software that comes on the phone. If you don't have it just go to http://www.lg.com/us/support-mobile/lg-D959
About halfway down the page will be a download link for the "pc suite". Download it and run the .exe. Once you have it opened up click "mobile devices" on the top toolbar. And then select "Restore upgrade errors". And let it do it's magic.
I know this method works. I used it 2 days ago in kitkat and have used it about 20 other times. Due to having no custom recovery, once I softbrick this is what I have been using to come back to stock unrooted kitkat. Then I use " Dfuse's downgrade and unroot the easy way"

mattwheat said:
Make sure you have internet connection. And boot to "download mode." Plug your phone into your PC, open up the LG PC Suite software that comes on the phone. If you don't have it just go to http://www.lg.com/us/support-mobile/lg-D959
About halfway down the page will be a download link for the "pc suite". Download it and run the .exe. Once you have it opened up click "mobile devices" on the top toolbar. And then select "Restore upgrade errors". And let it do it's magic.
I know this method works. I used it 2 days ago in kitkat and have used it about 20 other times. Due to having no custom recovery, once I softbrick this is what I have been using to come back to stock unrooted kitkat. Then I use " Dfuse's downgrade and unroot the easy way"
Click to expand...
Click to collapse
Thanks for the reply! The LG PC Suite method didn't work. It went through all the steps then failed.

Dang.

HELP!!! Please! BRICKED!!!

Hey so I have the L90 D415 and I flashed the partition tool to get more data but i didn't realize that it was broken for my device and now im having issues.... This is how it went. I used the tool and it got to 70% and rebooted back into twrp so i knew that wasnt right so i flashed the next one that was supposed to be fixed and it did flash completely but for some reason it erased twrp, installed cwm and now i cant get into either. I had flashed stock using cwm before i chose to reboot but im still not able to boot up(stuck on LG logo). So to recap I can't get into recovery at all. I have fastboot. flashtool wont work(wont read phone in usb mode cuz im not booted) and im stuck on the LG boot screen. Please help me.

JamesB3 said:
Hey so I have the L90 D415 and I flashed the partition tool to get more data but i didn't realize that it was broken for my device and now im having issues.... This is how it went. I used the tool and it got to 70% and rebooted back into twrp so i knew that wasnt right so i flashed the next one that was supposed to be fixed and it did flash completely but for some reason it erased twrp, installed cwm and now i cant get into either. I had flashed stock using cwm before i chose to reboot but im still not able to boot up(stuck on LG logo). So to recap I can't get into recovery at all. I have fastboot. flashtool wont work(wont read phone in usb mode cuz im not booted) and im stuck on the LG boot screen. Please help me.
Click to expand...
Click to collapse
Well duh you didnt wipe the data of the rom before you flashed so of couse you are gonna be boot. Flash with the kdz offline flash then when you are done flashing pull out battery and use special button combo to factory reset it so that you can boot in to phone but you will lose all data excluding the ones on your EXTERNAL sd card.

krchi said:
Well duh you didnt wipe the data of the rom before you flashed so of couse you are gonna be boot. Flash with the kdz offline flash then when you are done flashing pull out battery and use special button combo to factory reset it so that you can boot in to phone but you will lose all data excluding the ones on your EXTERNAL sd card.
Click to expand...
Click to collapse
I did though. I wiped system, data, cache, dalvik and internal.
What do you mean by offline flash?(sorry first LG. I had a Huawei before this)

JamesB3 said:
I did though. I wiped system, data, cache, dalvik and internal.
What do you mean by offline flash?(sorry first LG. I had a Huawei before this)
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2625044 follow the same steps but use our kdz for lg l90

4. go to C:\ProgramData\LGMOBILEAX
remove all files and folder
5. copy all files and folders from LGMOBILEAX that you unzip from step2 to C:\ProgramData\LGMOBILEAX
I ran into a problem. I cannot find the directory mentioned in #4.

JamesB3 said:
4. go to C:\ProgramData\LGMOBILEAX
remove all files and folder
5. copy all files and folders from LGMOBILEAX that you unzip from step2 to C:\ProgramData\LGMOBILEAX
I ran into a problem. I cannot find the directory mentioned in #4.
Click to expand...
Click to collapse
You need to make sure that you have hidden files on

yeah i figured it out with google.
I have tried both methods on the guide and have came up short both times. I keep receiving this error(In screenshot).

I am desperate for any fix to this problem. I have access to fastboot and download mode. That is honestly all i got. When my phone is on the LG screen my computer reads it but the lg flash tool has connection issues. Please help me figure this out. I really need my phone back.

JamesB3 said:
I am desperate for any fix to this problem. I have access to fastboot and download mode. That is honestly all i got. When my phone is on the LG screen my computer reads it but the lg flash tool has connection issues. Please help me figure this out. I really need my phone back.
Click to expand...
Click to collapse
Go on the lg website and find lg l90 d415 drivers and install them if you got that far its most likely just driver issues.

JamesB3 said:
I am desperate for any fix to this problem. I have access to fastboot and download mode. That is honestly all i got. When my phone is on the LG screen my computer reads it but the lg flash tool has connection issues. Please help me figure this out. I really need my phone back.
Click to expand...
Click to collapse
Also check if you have your computer enabled for all drivers..
Some drivers do not boot because the certificate is not correctly assigned.
If you have a PC running Windows, on boot press F8 and select disable driver certification verify.
Try again after this.

razoract said:
Also check if you have your computer enabled for all drivers..
Some drivers do not boot because the certificate is not correctly assigned.
If you have a PC running Windows, on boot press F8 and select disable driver certification verify.
Try again after this.
Click to expand...
Click to collapse
I got my phone fixed!!! I flashed twrp through fastboot then used the partition tool for our device to get my partitions back and i flashed lollipop! Thanks for all your help you guys!!! I am trying to help my friend fix his LG Volt. Can someone post the laf.img onhere for me please? thats all I need to get his phone working.

Secure boot error / Critical error demigod crash handler

so i tried to root my phone and install a custom recovery the phone was working good until i rebooted and ended up with this error
Secure boot error
cause :boot certification verify
then it goes to this screen (see image)
i can press up to go to download mode
and the pc is reading it as a serial port but the LG flash tool 2014 is not flashing it keeps failing to connect to the server or failing outright with the option to EXIT
i did download the VS980 kdz file
so im not sure how to move from here or if the phone can be recovered at all
any advice would be appreciated thanks

It your getting "network error" on the kdz method that's normal.. If you move the window you'll see that it's actually flashing.
I'll help you out in my guide you posted in

DjSkreem said:
so i tried to root my phone and install a custom recovery the phone was working good until i rebooted and ended up with this error
Secure boot error
cause :boot certification verify
then it goes to this screen (see image)
i can press up to go to download mode
and the pc is reading it as a serial port but the LG flash tool 2014 is not flashing it keeps failing to connect to the server or failing outright with the option to EXIT
i did download the VS980 kdz file
so im not sure how to move from here or if the phone can be recovered at all
any advice would be appreciated thanks
Click to expand...
Click to collapse
It happened to my G2. No way to fix. Took it to Verizon made up some lie and got a G3. No exactly proud of that, but I have a lot of respect for Verizon now

NBreunig3 said:
It happened to my G2. No way to fix. Took it to Verizon made up some lie and got a G3. No exactly proud of that, but I have a lot of respect for Verizon now
Click to expand...
Click to collapse
i got it fixed we can put the phone in download mode and flash it over ... who knew it may take a few tries or alot of tries but it will go to download mode ... then flash it

DjSkreem said:
i got it fixed we can put the phone in download mode and flash it over ... who knew it may take a few tries or alot of tries but it will go to download mode ... then flash it
Click to expand...
Click to collapse
Really...I tried that multiple times

try to power cycle the phone and when the screen goes blank press the power up button and but in the usb cable

can anyone help me to fix my vs980 ? I have the same problem

DjSkreem said:
so i tried to root my phone and install a custom recovery the phone was working good until i rebooted and ended up with this error
Secure boot error
cause :boot certification verify
then it goes to this screen (see image)
i can press up to go to download mode
and the pc is reading it as a serial port but the LG flash tool 2014 is not flashing it keeps failing to connect to the server or failing outright with the option to EXIT
i did download the VS980 kdz file
so im not sure how to move from here or if the phone can be recovered at all
any advice would be appreciated thanks
Click to expand...
Click to collapse
Well bro I was stuck with the same issue..
This happens to me when i flashed a wrong twrp recovery for lg g2 d801 and it was stuck in critical error i was also unable to access download mode ..
But my Good luck was that i recovered it by doing silly thing ?
So i do following things. But make sure u know the corrert version of your lg g2 to flash kdz file with lg flash tool and also must have lg drivers intalled.
Steps to perform.
1. While in critical error screen you have an option to press volume up button to boot into download mode( although it will not boot to download mode) but still press volume up button so your Pc can detect your phone.
2. Now flash a kdz file of your lg g2 with flash tool. ( you can google for it to download flash file for your lg g2 and how to flash it with lg flass tool.)
3. When you will try to flash it will fail..
4. Now power off your phone by pressing power button.
5. Now boot to download mode and flash the correct kdz with lg flash tool and u r good to go..
To acess download mode power off your phone immediately press volume up button and while keep pressing it and plug in usb cable and you will be in download mode

DjSkreem said:
so i tried to root my phone and install a custom recovery the phone was working good until i rebooted and ended up with this error
Secure boot error
cause :boot certification verify
then it goes to this screen (see image)
i can press up to go to download mode
and the pc is reading it as a serial port but the LG flash tool 2014 is not flashing it keeps failing to connect to the server or failing outright with the option to EXIT
i did download the VS980 kdz file
so im not sure how to move from here or if the phone can be recovered at all
any advice would be appreciated thanks
Click to expand...
Click to collapse
It happened to me several times. You should be able to boot into system though. If you kept a backup of your stock recovery, you can restore it and resolve this issue immediately.

LG L Fino D290n makes error on boot.No download mode or recovery,please help!

Yesterday a LG L Fino was brought to me for repair.It makes an error on boot.The error is the boot certificate verify error.I cannot fix this!
I tried booting in recovery,gives me the boot screen,then the error,black screen.
I tried download mode,same.
I even tried flashing it,but LG Flash Tool does not recognize it.When i connect the phone a whole alphabet of drives would appear with LG Logos on them.I was able to only open one of them,the size was 64MB and it stored a image folder.Device manager recognizes the phone as QHSUSB_BULK and a ton of Unknown Devices would appear,after that they disappear and the phone will be recognized as LGE AndroidNet USB Serial Port(COM4).Thank you :angel:

filipkosteski said:
Yesterday a LG L Fino was brought to me for repair.It makes an error on boot.The error is the boot certificate verify error.I cannot fix this!
I tried booting in recovery,gives me the boot screen,then the error,black screen.
I tried download mode,same.
I even tried flashing it,but LG Flash Tool does not recognize it.When i connect the phone a whole alphabet of drives would appear with LG Logos on them.I was able to only open one of them,the size was 64MB and it stored a image folder.Device manager recognizes the phone as QHSUSB_BULK and a ton of Unknown Devices would appear,after that they disappear and the phone will be recognized as LGE AndroidNet USB Serial Port(COM4).Thank you :angel:
Click to expand...
Click to collapse
Will the device boot to fastboot? Does the device respond to adb commands?
DO NOT CONTACT ME VIA PM TO RECEIVE HELP, YOU WILL BE IGNORED. KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE

Droidriven said:
Will the device boot to fastboot? Does the device respond to adb commands?
DO NOT CONTACT ME VIA PM TO RECEIVE HELP, YOU WILL BE IGNORED. KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE
Click to expand...
Click to collapse
Sorry i was inactive,but the LG L Fino is gone now i do not need help.Thank you

Droidriven said:
Will the device boot to fastboot? Does the device respond to adb commands?
DO NOT CONTACT ME VIA PM TO RECEIVE HELP, YOU WILL BE IGNORED. KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE
Click to expand...
Click to collapse
Hi, I have the same problem, here is the picture of my screen.
I have tried to follow these steps, but my phone cannot enter Secure boot mode.
Any idea what can I do?
thanks

ndr113 said:
Hi, I have the same problem, here is the picture of my screen.
I have tried to follow these steps, but my phone cannot enter Secure boot mode.
Any idea what can I do?
thanks
Click to expand...
Click to collapse
Hey there
I have a LG L90 D410 (Similar Qualcomm Device)
And I faced the same issue after a bad flash.
Did you flash anything?
Does the LG logo show up?
Please answer the above questions so I would be able to solve your problem

Gaptain4 said:
Hey there
I have a LG L90 D410 (Similar Qualcomm Device)
And I faced the same issue after a bad flash.
Did you flash anything?
Does the LG logo show up?
Please answer the above questions so I would be able to solve your problem
Click to expand...
Click to collapse
Hello sir!
I have never flash the phone. The first problem that I have seen was after one restart, it won't boot the os, I have seen the LG logo and after that it keeps reboots again. I have entered in recovery mode and wipe all data, but it didn't help. After that I started to see the message above(error) and that's all. My battery is completely empty and cannot charge it because the phone doesn't charge.

ndr113 said:
Hello sir!
I have never flash the phone. The first problem that I have seen was after one restart, it won't boot the os, I have seen the LG logo and after that it keeps reboots again. I have entered in recovery mode and wipe all data, but it didn't help. After that I started to see the message above(error) and that's all. My battery is completely empty and cannot charge it because the phone doesn't charge.
Click to expand...
Click to collapse
Hey there did you use advanced wipe to clear your data or was it factory reset.
If the LG Logo shows up and then the error comes then you can enter download mode by switching off the phone and then hold volume up key and at the same time insert a usb. You would enter download mode. If you enter the mode you can flash a KDZ
Gaptain4 here at your service :fingers-crossed:

Gaptain4 said:
Hey there did you use advanced wipe to clear your data or was it factory reset.
If the LG Logo shows up and then the error comes then you can enter download mode by switching off the phone and then hold volume up key and at the same time insert a usb. You would enter download mode. If you enter the mode you can flash a KDZ
Or If you want custom rom only,enter into recovery mode.
Then click wipe and then advanced wipe.
Check data
Check System
Check Dalvik/art
Check Cache.
And then Press install and download the suitable rom for you phone.
If you cannot resolve the problem contact me again
Gaptain4 here at your service :fingers-crossed:
Click to expand...
Click to collapse
No, they didn't use advanced wipe because they don't have a custom recovery installed. If you read their post more carefully, you'll see where they said that they never flashed the device, this means they have stock recovery, not custom recovery. None of what you posted helps them.
Sent from my LGL84VL using Tapatalk

Droidriven said:
No, they didn't use advanced wipe because they don't have a custom recovery installed. If you read their post more carefully, you'll see where they said that they never flashed the device, this means they have stock recovery, not custom recovery. None of what you posted helps them.
Sent from my LGL84VL using Tapatalk
Click to expand...
Click to collapse
Hey there thank for informing me.
He can still enter into download mode and flash kdz using flash tool
Custom Rom cannot be flashed
But a stock rom can be flashed and can be fixed.
Its a soft brick so he can surely flash a stock rom and recover his phone :fingers-crossed:\
When you try to charge your phone it doesn't show the charging status
But when you completely drain your battery to 0% it will show 0% and shows charging and you can confirm that it is charging

hi everyone
i have a LG L25
and i think i messed up flashing it using TWRP.
it stuck in FIRMWARE UPDATE screen and i cant access its TWRP mode
please help me

Marclance said:
hi everyone
i have a LG L25
and i think i messed up flashing it using TWRP.
it stuck in FIRMWARE UPDATE screen and i cant access its TWRP mode
please help me
Click to expand...
Click to collapse
Did you try to flash a stock update using TWRP?
If so, that is the problem. Stock updates can't be applied to a rooted device or a device that has TWRP installed, any one or both of these will interfere with applying the update. You can only apply stock updates to devices that have an unmodified system partition(no root, no Xposed) and have stock recovery, stock recovery is required for applying stock updates.
If this is what you did, your only option to fix this is to flash your full stock firmware. Do a Google search for:
"Return to stock (your model number)"
If the tools and files exist for your device, that should find it.
Sent from my LGL84VL using Tapatalk