Help ! Lg g2 stuck on boot loop - G2 Q&A, Help & Troubleshooting

Hi all
My lg g2 is on android 4.4.2 with rooted
I have changed his model name to GT-N7100 on build.prop to download none compatible app for my device
But after I rebooted
it stuck on boot loop and won't boot
I have try to flash lg stock rom by using lgflashtool with tot file but it take me error " different model chack phone or dll "
On my download mod screen it also show me model GT-N7100
An I also flash with lg mobile support tool
But it tell me "u are using a latest software from lg mobile support tool "and start upgrade button is gone
On lg mobile support tool show me the right model name "D802"
When I try upgrade recovery from lg mobile support option it return "no item to upgrade "
Also flash by kdz offline mode it return unknown error " with China txt "
Than I have use adb comment to delete and push build.prop but my devices adb is in offline
Please help me
Can I flash system.img using fastboot comment if I can how to enter fastboot mode on lg g2
Other say me
Press V+ than plug USB to enter to fastboot mode
I have try but on my fast boot comment no fastboot devices delete and my g2 is on download mode screen
Please any help !
Sorry for my English

No body help me

Did you try this guide?
http://forum.xda-developers.com/showthread.php?t=2432476

Gnarfsan said:
Did you try this guide?
http://forum.xda-developers.com/showthread.php?t=2432476
Click to expand...
Click to collapse
yes, but i only get 49% after " pc to phone send end " and
get this error

I haven't seen that happen before :-\
Have you tried another KDZ?

Gnarfsan said:
I haven't seen that happen before :-\
Have you tried another KDZ?
Click to expand...
Click to collapse
I have try two kdz file
1. Hong Kong 32gb d80210b_00
2.(new android 4.4.2 ) D80220a_Kdz
No luck
My original firmware is Hong Kong version

maxkanick said:
Hi all
My lg g2 is on android 4.4.2 with rooted
I have changed his model name to GT-N7100 on build.prop to download none compatible app for my device
But after I rebooted
it stuck on boot loop and won't boot
I have try to flash lg stock rom by using lgflashtool with tot file but it take me error " different model chack phone or dll "
On my download mod screen it also show me model GT-N7100
An I also flash with lg mobile support tool
But it tell me "u are using a latest software from lg mobile support tool "and start upgrade button is gone
On lg mobile support tool show me the right model name "D802"
When I try upgrade recovery from lg mobile support option it return "no item to upgrade "
Also flash by kdz offline mode it return unknown error " with China txt "
Than I have use adb comment to delete and push build.prop but my devices adb is in offline
Please help me
Can I flash system.img using fastboot comment if I can how to enter fastboot mode on lg g2
Other say me
Press V+ than plug USB to enter to fastboot mode
I have try but on my fast boot comment no fastboot devices delete and my g2 is on download mode screen
Please any help !
Sorry for my English
Click to expand...
Click to collapse
After 2 day
My problem have been resolved (by me)in this morning:fingers-crossed:
Soo good morning every body
I have got my g2 backed
I will tell u if your problem just like me
To force flash firmware without checking model numbers on your g2
1.do not use kdz file (but we still need it)
2.do not use up testEX
MAIN program we need is Lg flash tool
Just download your right kdz firmware file
Download your right tot firmware file
For model dll do not use dll given with tot file
Just use kdz extractor and extract your dll from your kdz file
Flash it with your tot firmware in lg flash tool
And Good luck:laugh:

I am in the same problem you had and I have read your solution but I do not understand how to extract the kdz.

maxkanick said:
Hi all
My lg g2 is on android 4.4.2 with rooted
I have changed his model name to GT-N7100 on build.prop to download none compatible app for my device
But after I rebooted
it stuck on boot loop and won't boot
I have try to flash lg stock rom by using lgflashtool with tot file but it take me error " different model chack phone or dll "
On my download mod screen it also show me model GT-N7100
An I also flash with lg mobile support tool
But it tell me "u are using a latest software from lg mobile support tool "and start upgrade button is gone
On lg mobile support tool show me the right model name "D802"
When I try upgrade recovery from lg mobile support option it return "no item to upgrade "
Also flash by kdz offline mode it return unknown error " with China txt "
Than I have use adb comment to delete and push build.prop but my devices adb is in offline
Please help me
Can I flash system.img using fastboot comment if I can how to enter fastboot mode on lg g2
Other say me
Press V+ than plug USB to enter to fastboot mode
I have try but on my fast boot comment no fastboot devices delete and my g2 is on download mode screen
Please any help !
Sorry for my English
Click to expand...
Click to collapse
See this http://forum.xda-developers.com/showthread.php?t=2680910

Sprint LG G2 Bricked with Tmobile Firnware
maxkanick said:
After 2 day
My problem have been resolved (by me)in this morning:fingers-crossed:
Soo good morning every body
I have got my g2 backed
I will tell u if your problem just like me
To force flash firmware without checking model numbers on your g2
1.do not use kdz file (but we still need it)
2.do not use up testEX
MAIN program we need is Lg flash tool
Just download your right kdz firmware file
Download your right tot firmware file
For model dll do not use dll given with tot file
Just use kdz extractor and extract your dll from your kdz file
Flash it with your tot firmware in lg flash tool
And Good luck:laugh:
Click to expand...
Click to collapse
How do you extract the the kdz file and where can you get it? I been looking for it

Related

How to force flash firmware in to g2 without checking model numbers

For who have change their build.prop and stuck on boot loop
And get different model error on lg flash tool
And stuck on 49% in download mode
Here you go
http://forum.xda-developers.com/showthread.php?p=51028233#post51028233
Quote:
Originally Posted by maxkanick
Hi all
My lg g2 is on android 4.4.2 with rooted
I have changed his model name to GT-N7100 on build.prop to download none compatible app for my device
But after I rebooted
it stuck on boot loop and won't boot
I have try to flash lg stock rom by using lgflashtool with tot file but it take me error " different model chack phone or dll "
On my download mod screen it also show me model GT-N7100
An I also flash with lg mobile support tool
But it tell me "u are using a latest software from lg mobile support tool "and start upgrade button is gone
On lg mobile support tool show me the right model name "D802"
When I try upgrade recovery from lg mobile support option it return "no item to upgrade "
Also flash by kdz offline mode it return unknown error " with China txt "
Than I have use adb comment to delete and push build.prop but my devices adb is in offline
Please help me
Can I flash system.img using fastboot comment if I can how to enter fastboot mode on lg g2
Other say me
Press V+ than plug USB to enter to fastboot mode
I have try but on my fast boot comment no fastboot devices delete and my g2 is on download mode screen
Please any help !
Sorry for my English
After 2 day
My problem have been resolved (by me)in this morning
Soo good morning every body
I have got my g2 backed
I will tell u if your problem just like me
To force flash firmware without checking model numbers on your g2
1.do not use kdz file (but we still need it)
2.do not use up testEX
MAIN program we need is Lg flash tool
Just download your right kdz firmware file
Download your right tot firmware file
For model dll do not use dll given with tot file
Just use kdz extractor and extract your dll from your kdz file
Flash it with your tot firmware in lg flash tool
And Good luck
help?
can you explain how to extract the dll file from the kdz??
and does the kdz have to be the same version as the tot file??
Sprint LG G2 KDZ file
maxkanick said:
After 2 day
My problem have been resolved (by me)in this morning
Soo good morning every body
I have got my g2 backed
I will tell u if your problem just like me
To force flash firmware without checking model numbers on your g2
1.do not use kdz file (but we still need it)
2.do not use up testEX
MAIN program we need is Lg flash tool
Just download your right kdz firmware file
Download your right tot firmware file
For model dll do not use dll given with tot file
Just use kdz extractor and extract your dll from your kdz file
Flash it with your tot firmware in lg flash tool
And Good luck
Click to expand...
Click to collapse
Could you point me at the right Sprint LG G2 KDZ file please? I just have the TOT file and it's .dll file
Thank you!

[vs980]Hard Brick (flash tool %2 failed)

Hi my friends
We have a big problem and we thought you can help us
my friends have vs980 phone but he flash d802 firmware so phone enter fast boot mode. And then I help his and flash laf.img and enter download mod but now we dont flash vs980 firmware. I open lg support tool phone firmware model shown D80210h. what can we do ?

[Q] LG not enter download mode

Hello everyone. I root my verizon lg vs980 g2 then install recovery modified with a program that does not remember the name to install the lg g2 . Then I find the surprise that tells me to start Fastboot : Processing comands . Try to enter download mode to update the firmware of the box but when I try to do , says download mode but is removed immediately and presents me the screen in white letters on the fastboot . Now try factory reset it and nothing. If anyone can help me please .:crying:
hi
cristiangpujols said:
Hello everyone. I root my verizon lg vs980 g2 then install recovery modified with a program that does not remember the name to install the lg g2 . Then I find the surprise that tells me to start Fastboot : Processing comands . Try to enter download mode to update the firmware of the box but when I try to do , says download mode but is removed immediately and presents me the screen in white letters on the fastboot . Now try factory reset it and nothing. If anyone can help me please .:crying:
Click to expand...
Click to collapse
If you can see partition on linux go to the link if not see your dvaice is hard brick and you can find any tool to flash partition or Payments tangick for fix it
http://forum.xda-developers.com/showthread.php?t=2582142

[q]Force Device to Install Rom From Other Model

Hi, I accidentally bricked my phone by installing F302S rom into my d802 (CloudyG2 3.0)
After lot of struggles I managed to fix the download mode (it's booting on fastboot previously)
but error occured when I flash d802 stock kdz file to my phone, it stopped at 49%
in the download mode it displayed my phone as F302S instead of d802
and seems like the error is because the flash tool does not allows me to install d802 as it is not F302S
I've read about cross dll file / LGUP_8974.dll for this problem, but I can't manage to understand it, can anyone please guide me on this?
any help will be appreciated greatly
Please help me anyone,
I'm getting desperate on this
I've tried to extract the kdz for my d802, and manual flash using Flash Tool V1.8.1.1023 with LGUP8974.dll from F320 and the extracted dz file of my kdz
but the flashtool does not detect my phone at port COM41, I've installed the driver too
please anyone, thanks
edxzdev said:
Please help me anyone,
I'm getting desperate on this
I've tried to extract the kdz for my d802, and manual flash using Flash Tool V1.8.1.1023 with LGUP8974.dll from F320 and the extracted dz file of my kdz
but the flashtool does not detect my phone at port COM41, I've installed the driver too
please anyone, thanks
Click to expand...
Click to collapse
Follow this.
http://forum.xda-developers.com/lg-g2/general/lg-g2-cross-dll-device-model-fota-laf-t3003717
And change the com port no. Of ur g2 in device magager to 41 then it will detect
Sent from my LG-D800 using XDA Free mobile app
solved my problem with the suggestion here, thanks alot
but currently I can't boot into recovery mode, seems like I messed up with my recovery partition using fastboot before

D802 bricked after Lollipop update

Hello, today i tried to flash from recovery this lollipop zip: http://forum.xda-developers.com/lg-g2/development-d802/rom-stock-30d-flashable-zip-t3070383 and flashed immediately TWRP also.
Now when i boot up the device I get a critical demigod error screen from which I can enter Download mode.
So i tried to install v30a .kdzwith flashtool but the installation fails...
Any suggestions? D:
I can only get to download mode, the phone is correctly recognized from the pc and LG Mobile Support Tools sees the device but with SW OPTIMUSG3 1.4.1 (the rom i had when I flashed Lollipop)!
diegz said:
Hello, today i tried to flash from recovery this lollipop zip: http://forum.xda-developers.com/lg-g2/development-d802/rom-stock-30d-flashable-zip-t3070383 and flashed immediately TWRP also.
Now when i boot up the device I get a critical demigod error screen from which I can enter Download mode.
So i tried to install v30a .kdzwith flashtool but the installation fails...
Any suggestions? D:
I can only get to download mode, the phone is correctly recognized from the pc and LG Mobile Support Tools sees the device but with SW OPTIMUSG3 1.4.1 (the rom i had when I flashed Lollipop)!
Click to expand...
Click to collapse
tried lg flash tool? what error you get it stops 2%?
can you reboot recovery with keys or some kind of adb reboot recovery?
OverClockeD_GR said:
tried lg flash tool? what error you get it stops 2%?
can you reboot recovery with keys or some kind of adb reboot recovery?
Click to expand...
Click to collapse
Thanks for the reply!
It stops at 2% and i get the error in the image.
I tried with 30a, 20h and 20f :/
It's a pain mainly because it's my only phone!
diegz said:
Thanks for the reply!
It stops at 2% and i get the error in the image.
I tried with 30a, 20h and 20f :/
It's a pain mainly because it's my only phone!
Click to expand...
Click to collapse
ye i had this problem when tried to kdz from optimusg3...cause phone recognized not as d802 i think.. i flashed a stock rom zip format throught recovery and after i was able to flash kdz..
can you try this
http://forum.xda-developers.com/lg-g2/development-d802/fix-lg-flash-tool-stuck-2-t3031112
if you enter recovery mode somehow then its easy just flash a stock rom
or just flash a rom with tot methode
OverClockeD_GR said:
ye i had this problem when tried to kdz from optimusg3...cause phone recognized not as d802 i think.. i flashed a stock rom zip format throught recovery and after i was able to flash kdz..
can you try this
http://forum.xda-developers.com/lg-g2/development-d802/fix-lg-flash-tool-stuck-2-t3031112
if you enter recovery mode somehow then its easy just flash a stock rom
or just flash a rom with tot methode
Click to expand...
Click to collapse
I can only go to download mode and the adb seems to not recognize the device from there
diegz said:
I can only go to download mode and the adb seems to not recognize the device from there
Click to expand...
Click to collapse
As said above, you should try .tot method; I was like you, .kdz didn"t work, but .tot method works perfectly. You'll be on 4.2.2, 'cause .tot method only support 4.2.2 version of android on D802, but you can upgrade after with .zip rom or re-try .kdz method.
Check second part of this tutorial : http://forum.xda-developers.com/showthread.php?t=2432476 ( "2015 (updated with pictures) TOT method" ).
Yeah, final thing: if, after .tot method you're stuck in bootloop, factory reset your phone (power off, then volum down + power key, wait for LG logo, release buttons, then volum down + power key again, and your phone should work like a charm). Let us know if it work!
casual_kikoo said:
As said above, you should try .tot method; I was like you, .kdz didn"t work, but .tot method works perfectly. You'll be on 4.2.2, 'cause .tot method only support 4.2.2 version of android on D802, but you can upgrade after with .zip rom or re-try .kdz method.
Check second part of this tutorial : http://forum.xda-developers.com/showthread.php?t=2432476 ( "2015 (updated with pictures) TOT method" ).
Yeah, final thing: if, after .tot method you're stuck in bootloop, factory reset your phone (power off, then volum down + power key, wait for LG logo, release buttons, then volum down + power key again, and your phone should work like a charm). Let us know if it work!
Click to expand...
Click to collapse
Trying the tot method...
But can't even do the factory reset cause as soon as the LG logo appears I get the critical error!
diegz said:
Trying the tot method...
But can't even do the factory reset cause as soon as the LG logo appears I get the critical error!
Click to expand...
Click to collapse
do tot methot and it wil work follow this instructions get the tot files and the right dll i copy paste from a guy that had optimus and worked like this on him
"My problem was the infamous 2% bug with the KDZ. I think reason for this is the wrong device ID set in the 'build.prop' by the G3 rom for the G2. The flash tool expects a G2 but sees a G3.
I did not find a workaround for this BUT there is one for the TOT method. You will need:
- LGUnitedMobileDriver_S51MAN312AP22_ML_WHQL_Ver_3.1 2.3.exe (version does not matter)
- Setup_LGFlashTool_1.8.1.1023.exe - for flashing of a TOT
- LGUP_8974.dll - this is needed for the flash tool to accept all TOTs
- the right TOT for your device
Please google these, I just checked and found them all. You can also find instructions for them.
Install drivers and LGFlashTool then start it.
Start smartphone in download mode by holding the volume up key while plugging USB in PC. Phone must be off.
Wait for the device recognition then change COM port of the new device in Windows device manager to something between 41-56 so that the flash tool can find the phone. In the model config window of the flash tool select the 'manual mode' then enter the path to the downloaded LGUP_8974.dll in 'DLL' and the path to your TOT file in 'S/W'. Set 'Action mode' to 'BOARD DL' then press 'OK'.
Your phone should be shown on selected COM port. Now you can press Start (the arrow).
OverClockeD_GR said:
do tot methot and it wil work follow this instructions get the tot files and the right dll i copy paste from a guy that had optimus and worked like this on him
"My problem was the infamous 2% bug with the KDZ. I think reason for this is the wrong device ID set in the 'build.prop' by the G3 rom for the G2. The flash tool expects a G2 but sees a G3.
I did not find a workaround for this BUT there is one for the TOT method. You will need:
- LGUnitedMobileDriver_S51MAN312AP22_ML_WHQL_Ver_3.1 2.3.exe (version does not matter)
- Setup_LGFlashTool_1.8.1.1023.exe - for flashing of a TOT
- LGUP_8974.dll - this is needed for the flash tool to accept all TOTs
- the right TOT for your device
Please google these, I just checked and found them all. You can also find instructions for them.
Install drivers and LGFlashTool then start it.
Start smartphone in download mode by holding the volume up key while plugging USB in PC. Phone must be off.
Wait for the device recognition then change COM port of the new device in Windows device manager to something between 41-56 so that the flash tool can find the phone. In the model config window of the flash tool select the 'manual mode' then enter the path to the downloaded LGUP_8974.dll in 'DLL' and the path to your TOT file in 'S/W'. Set 'Action mode' to 'BOARD DL' then press 'OK'.
Your phone should be shown on selected COM port. Now you can press Start (the arrow).
Click to expand...
Click to collapse
Ok downloaded all the files except the .tot. I found THIS but they are .exe :/ should i change the file type once downloaded? (I'm downloading v10a)
Thanks for the help guys!
diegz said:
Ok downloaded all the files except the .tot. I found THIS but they are .exe :/ should i change the file type once downloaded? (I'm downloading v10a)
Thanks for the help guys!
Click to expand...
Click to collapse
No, do not rename file; it's .exe BUT when you'll double-click on it, it gonna launch winrar automatically; I was "scared" too, but it works pretty good don't worry. (Sorry I'm late, but I'm french, and there is jetlag between you and me...)
casual_kikoo said:
No, do not rename file; it's .exe BUT when you'll double-click on it, it gonna launch winrar automatically; I was "scared" too, but it works pretty good don't worry. (Sorry I'm late, but I'm french, and there is jetlag between you and me...)
Click to expand...
Click to collapse
Ok guys! The TOT method worked Then I flashed v30a kdz and it works perfectly!
As you said the problem was that flashtool didn't recognise the G2 (probably it saw it as G3) so it keeps stopping at 2%.
Thank you all for the help :highfive:
Ps no jetlag I'm from Italy ;p
diegz said:
Ok guys! The TOT method worked Then I flashed v30a kdz and it works perfectly!
As you said the problem was that flashtool didn't recognise the G2 (probably it saw it as G3) so it keeps stopping at 2%.
Thank you all for the help :highfive:
Ps no jetlag I'm from Italy ;p
Click to expand...
Click to collapse
My mistake ! Happy for you!
@diegz, what variant of LG G2 do you have? International? I'm planning to flash the 30A 32gb Italy variant on my G2 international. Just want a quick reference before I flash. Sorry for the OT.
@happiness4u i'm on 16gb D802! It's a great update if you ask me
diegz said:
@happiness4u i'm on 16gb D802! It's a great update if you ask me
Click to expand...
Click to collapse
Thanks for the heads up. Gonna try this out in a moment. +1 added.

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