Develop Bugs

lg optimus us670 frozen at LG screen

hello, im new to the forums. i have a lg optimus us670 that i have been trying to customize. i rooted with gingerbreak and worked fine. i wanted to make a back up and after searching and reading the forums i went with amon ra recovery, but now the phone gets stuck at the lg screen. will not boot normal/ recovery. it will go into S/W upgrade though. tried to recover phone with lg update utility, when the utility starts it connects to phone, checks software, and recommends upgrade. when i try to update software or recover phone it cannot establish connection with phone. left it at us cellular store all day yesterday and all they could do was retrieve the phonebook/contacts. i have read forums and dont know what i should do next.
i have downloaded the kdz installer and downloaded my firmware from a link i found in one of the posts. but it is a .cab file with a .dll , .wdh , and a ms works database inside. i dont know what to do now.

i have downloaded the kdz installer and downloaded my firmware from a link i found in one of the posts. but it is a .cab file with a .dll , .wdh , and a ms works database inside. i dont know what to do now.

okay, so... after more searching i have found a program that will load the .cab file onto my phone, but it errors when it extracts the file. wondering if i need to find another file...

okay, now im setting up adb on pc and will try to connect to phone, if nobody is following this i will quit posting what im doing. just hoping i can get this thing working again.

recover stock ( SOLVED )

Hello guys , I am new LG mobile user(CURIOUS ONE)
I bought LG OPTIMUS G PRO F240L and installed miui because i loved its interface ...
when i tried to get back to the stock rom I followed.
Code:
http://forum.xda-developers.com/showthread.php?t=2420219
It was easy... but in the end I encountered problem named (BATTERY POWER IS LOW , Please recharge your phone (something similer) .
I found a solution , It was a simple trick
** just followed above thread **, after when the lg support tool opens. it checks mobile is connected ,after that i removed my usb cable from device.
Well this solved problem. But after few minutes of extraction of kdz , It gave error that "Cannot Connect to the Network" ... well it was solved automatically. simply moved that error dialog and under that the support tool was installing stock rom... everything was solved, I loved kitkat 4.4.2 on this BEAST.
I HOPE ABOVE EXPERIENCE HELPS OTHERS
but alas I just tried miui again on it.. and after using it for while I wanted to get back on stock rom...
now this time whole errors are different...
LOG FILE IS ATTACHED(support-log.txt)
I just copied it.. from support tool.. front end ui.
KINDLY SOME ONE HELP ME !!!!!.
FIND THE FILE ATTACHED
Click to expand...
Click to collapse
I solved my own errors
Solution was simple to that error
the 3GCQT option was selected in R&D tool
I selected CDMA after that and started test with CSE WEB UPGRADE TEST

[q] my lg g3 stylus no have system help plis :(

HELLO GOOD AFTERNOON EQUIPMENT XDA, I HAVE A BIG PROBLEM WITH MY LG G3 STYLUS, A FEW DAYS WANTED TO INSTALL PROPER SYSTEMUI A MOD BUT NOT BACK UP MY APP, GAVE ME TO INITIATE ERROR, AND TRY place a DIFFERENT STATE BAR BUT NOTHING, AND ATTEMPT TO INSTALL THE SYSTEM AND DOES NOT RUN BY LE DESPERATE SITEMA DELETE FOLDER WITH THE HOPE THAT THE PROGRAM LG recognize ANY ERROR IN MY PHONE AND THE rEPAIR, BUT I kept saying ALREADY HAD THE LATEST SOFTWARE, THE PROBLEM IS THAT MY MODEL IS D693N 10A, AND ONLY FIND THE MODEL D690 KDZ FORMAT, AND tRIED EVERYTHING, BUT NOTHING ME A RESULT, porfabor alguin IF YOU HAVE THE SOLUTION TO THE PROBLEM IS MUCH APPRECIATE, TOOK A WEEK WITHOUT MY LG I FEEL THAT I DIE FOR ANYTHING LEFT MY MAIL [email protected]
THE MODEL IS LG-D693N V10A
THANKS IN ADVANCE.:fingers-crossed:

Sir,
Please wait until mods will move this thread to the device specific forum for more relevant answers.
Stand by
Good luck

SOLVED [HELP] LG G4 (H815P) Bricked "Authentication Fail #9"

Hello everyone
So, this is my problem here, I got my G4 last week, rooted it to debloat, followed the instructions I found here on XDA, and it was working as a charm.
The problem came when I wanted to change the (micro) SD card to another phone, I took the back cover off, took out the SD card, and a warning message about the SD card might be damaged came on screen.
So I turned off the G4, after I was ready to put back the SD, tried to power on the phone again and the error message appeared.
"Security Error, Auth Fail #9" and then it just won't boot.
Hope anyone can help me.
I was on stock Telcel Firmware, had rebooted the phone several times before with no issues so far.

Never mind, I just reflashed stock firmware found
here: http://devtester.ro/projects/lg-firmwares/
then followed this steps
Tutorial: http://devtester.ro/projects/lg-firmwares/install.php
So, after a clean flash, it booted again, as Iv'e had it for just one week, nothing was lost.
Hope this helps anyone else facing this strange problem.
By the way, if anyone know something about the possible cause for this malfunction, I woud really appreciate you sharing info.
Cheers!

i Have had the same problem i was woundering if you could please walk me through the steps on how you fixed yours.
I recently just bought a new LG G Stylo with MetroPCS. this is my first time being with android so i took it upon my self to root the phone and see what all i could do with it. Everything worked fine for a couple of days then i tried to reset my phone and when it tried to come back on the lg logo cane up and it said Authentication fail #9. I try to factory reset the phone but it goes back to the same screen. I can not put the phone in download mode and my computer does not detect that there is a phone there. If there is anyone who can help me please it will be greatly appreciated.

joyousfrank said:
Never mind, I just reflashed stock firmware found
here: http://devtester.ro/projects/lg-firmwares/
then followed this steps
Tutorial: http://devtester.ro/projects/lg-firmwares/install.php
So, after a clean flash, it booted again, as Iv'e had it for just one week, nothing was lost.
Hope this helps anyone else facing this strange problem.
By the way, if anyone know something about the possible cause for this malfunction, I woud really appreciate you sharing info.
Cheers!
Click to expand...
Click to collapse
How can be LG G4 H815P be rooted, have read many tutorials, but no one is for the variant "P" (Telcel).
Thanks!!!

Hello!
Well, I found out the source of the problem on "error 9".
As it happened again a couple days after posting the thread.
In my case, when I uninstalled LG apps, such as music and video apks, "error 9" would come up on next boot.
Follow the tutorials, the most important thing is to have the right version of SW to your phone.
Also, I had to download LG bridge, then a pop-up came telling that drivers for the phone should be updated, I just accepted the update and then my phone was detected on my PC .
If you encounter a problem, please provide me a little more info (with caps if possible).
Hope to help you.
Enviado desde mi LG-H815P

@joyousfrank. I've just been de-bloating my phone and managed to get a Security Error problem and was hoping to use this method to get the thing live again. Trouble is that Google is blocking the LGFlashtool download link. Any chance you have another link or could maybe upload a copy of the tool somewhere? Cheers

joyousfrank said:
Hello!
Well, I found out the source of the problem on "error 9".
As it happened again a couple days after posting the thread.
In my case, when I uninstalled LG apps, such as music and video apks, "error 9" would come up on next boot.
Follow the tutorials, the most important thing is to have the right version of SW to your phone.
Enviado desde mi LG-H815P
Click to expand...
Click to collapse
Hi, my version of the G4 is H815P too (CLARO BR), and I want to know wich tutorials you're referring to and if you encounter a method to surpass this issue when trying to remove/debloat the phone...

wadken1 said:
@joyousfrank. I've just been de-bloating my phone and managed to get a Security Error problem and was hoping to use this method to get the thing live again. Trouble is that Google is blocking the LGFlashtool download link. Any chance you have another link or could maybe upload a copy of the tool somewhere? Cheers
Click to expand...
Click to collapse
Sorry I couldn't help you, but it's great to know that you have solved your problem.

depechemodem said:
How can be LG G4 H815P be rooted, have read many tutorials, but no one is for the variant "P" (Telcel).
Thanks!!!
Click to expand...
Click to collapse
I used this thread as a guide
http://forum.xda-developers.com/g4/orig-development/root-tmo-vzw-intl-variants-soon-root-lg-t3164765
(Follow the steps for International H815 10c Version)
This is the rooted image I used http://forum.xda-developers.com/g4/...on-root-lg-t3164765/post62251256#post62251256
After you download it just unzip it, and rename the .img file to "system.rooted.H81510c-EU"
The file must be system.rooted.H81510c-EU.img
Hope to help.
Cheers!

hralm said:
Hi, my version of the G4 is H815P too (CLARO BR), and I want to know wich tutorials you're referring to and if you encounter a method to surpass this issue when trying to remove/debloat the phone...
Click to expand...
Click to collapse
Hello!
The first thing to do, is to find the right SW foy your phone model (and carrier) as I read some problems when flashing other different than stock.
Look up here http://devtester.ro/projects/lg-firmwares/download.php there's where I found the SW for Telcel. Just input your IMEI on that page and it will give you a download link.
Then, follow this steps http://devtester.ro/projects/lg-firmwares/install.php
It's important to tell you that my phone wasn't detected by my PC until I downloaded LG Bridge as it comes with the latest drivers, so I recommend you to do this if you face the "not-detecting phone PC".
And for last, I suppose that there should be thread with a list of safe to uninstall apps (this is my first LG so not totally sure).
As there's enough room for apps on the phone, I just ended freezing annoying apps with Link2SD to avoid having the "Authentcation Error #9" problem.
Hope to help you, cheers!

FLASHGOTHOPS said:
i Have had the same problem i was woundering if you could please walk me through the steps on how you fixed yours.
I recently just bought a new LG G Stylo with MetroPCS. this is my first time being with android so i took it upon my self to root the phone and see what all i could do with it. Everything worked fine for a couple of days then i tried to reset my phone and when it tried to come back on the lg logo cane up and it said Authentication fail #9. I try to factory reset the phone but it goes back to the same screen. I can not put the phone in download mode and my computer does not detect that there is a phone there. If there is anyone who can help me please it will be greatly appreciated.
Click to expand...
Click to collapse
Hope it's not too late.
The first thing to do, is to find the right SW foy your phone model (and carrier) as I read some problems when flashing other different than stock. (This is important as I've only done this with G4, so you're going to do the search for the right SW)
You can look up here http://devtester.ro/projects/lg-firmwares/download.php there's where I found the SW for H815P (Telcel). Just input your IMEI on that page and hopely it will give you a download link.
Then, follow this steps http://devtester.ro/projects/lg-firmwares/install.php
It's important to tell you that my phone wasn't detected by my PC until I downloaded LG Bridge as it comes with the latest drivers, so I recommend you to do this if you face the "not-detecting phone PC".
Cheers!

LG G4 Bricked? Attempt to install alternate Mobile OS

Greetings,
General
I've been all over the Internet trying to gain access to more information about how to repair my LG G4. Well... Let's start from the beginning.
Story
I have an LG G4, it's old and I've had it for over 4-5 years now... I can't exactly remember how long I had it for. It still works, just needs a new battery and cable (cats chewed the cable and batteries don't last when you forget to disconnect them from the device, leave it plugged in for weeks and let it completely die for longer then a week).
I recently saw a video about the Pine phone and the fact that it was able to run a linux mobile distribution and when I looked into installing a custom OS into LG G4, it was possible... If I manually ported it myself.
I actually got fairly far using my Xubuntu system with configuring and compiling, the trouble I ran into was that I couldn't root or fastboot my device.
So, now here's where the problem began, I have a LG G4 factory reset and when I load up the Recovery mode, it brings up the android guy with their chest open and an exclamation mark in a yellow triangle, no message. After attempting to boot into recovery mode, I wait a little while and the phone automatically resets back to normal. When I use ADB to force the phone into fast boot, it skips it and starts the phone normally.
Now I'm on a mission to find a way to either fix the boot or flash the firmware (in hopes that it fixes the boot/recovery).
I have already tried:
Installing LGFlashTool
Versions, 2.0.1.6, 2.0.1.9, Year: 2014 and 2.0.2.5. Other than year 2014, the other ones were installed from LGFlashTool.com
Since Xubuntu can't run these files properly, I just ran them on my wife's Windows computer
I installed the LG Mobile Drivers and LGFlashTool had registered that it was the correct DLL but, it didn't seem to find the phone
Year 2014 LGFlashTool had found the phone but, I may have had the incorrect kdz file.
The Flash starts and the phone goes to firmware update, but the phone stops at zero and sits there while the program crashes saying that there was an error (in which no means to read, understand or locate the description of this error) and to try again by unplugging and removing the battery.
This version was downloaded from xda-developers.com
Conclusion
Once I can get into fastboot, I'll be able to root my phone and attempt to install the mobile OS I have ready.
Otherwise, I think I might be able to install a microSD card with the OS but, I don't think that will work if I can't get into the option to boot from a separate location (I believe that's called fastboot). But, then again... I think the phone needs to be rooted first... Then that brings me to the previous issue.
Details and Information
The phone details (as far as I see) are:
When I remove the battery I can see:
FCC ID: ZMFH810
IC ID: 2703C-H812
Model Number: LG-H812
I'm not exactly sure what KDZ file I got but the name is: PR H810PR10a_02.kdz, I also have the _04.kdz
I'm using H815 as my compile for the mobile OS, I may switch to H810 when I get back to that point.
Useless information: I still have the original leather backing... Removed from the phone because I didn't like it. If I find it, I can ship it to someone.
That's about it... I am very terrible about research and using Google properly (I have no idea why, I think it's a terrible flaw to have but, I have it). So, if you find the solution by typing words I didn't use or finding a similar post, I am very sorry. Hope I have everything posted here to help solve the issue, linking to posts that can resolve the issue or posting questions on what I might be missing will help.
Thanks in advance for the support of this community,
Lilrock

Lilrock said:
Greetings,
General
I've been all over the Internet trying to gain access to more information about how to repair my LG G4. Well... Let's start from the beginning.
Story
I have an LG G4, it's old and I've had it for over 4-5 years now... I can't exactly remember how long I had it for. It still works, just needs a new battery and cable (cats chewed the cable and batteries don't last when you forget to disconnect them from the device, leave it plugged in for weeks and let it completely die for longer then a week).
I recently saw a video about the Pine phone and the fact that it was able to run a linux mobile distribution and when I looked into installing a custom OS into LG G4, it was possible... If I manually ported it myself.
I actually got fairly far using my Xubuntu system with configuring and compiling, the trouble I ran into was that I couldn't root or fastboot my device.
So, now here's where the problem began, I have a LG G4 factory reset and when I load up the Recovery mode, it brings up the android guy with their chest open and an exclamation mark in a yellow triangle, no message. After attempting to boot into recovery mode, I wait a little while and the phone automatically resets back to normal. When I use ADB to force the phone into fast boot, it skips it and starts the phone normally.
Now I'm on a mission to find a way to either fix the boot or flash the firmware (in hopes that it fixes the boot/recovery).
I have already tried:
Installing LGFlashTool
Versions, 2.0.1.6, 2.0.1.9, Year: 2014 and 2.0.2.5. Other than year 2014, the other ones were installed from LGFlashTool.com
Since Xubuntu can't run these files properly, I just ran them on my wife's Windows computer
I installed the LG Mobile Drivers and LGFlashTool had registered that it was the correct DLL but, it didn't seem to find the phone
Year 2014 LGFlashTool had found the phone but, I may have had the incorrect kdz file.
The Flash starts and the phone goes to firmware update, but the phone stops at zero and sits there while the program crashes saying that there was an error (in which no means to read, understand or locate the description of this error) and to try again by unplugging and removing the battery.
This version was downloaded from xda-developers.com
Conclusion
Once I can get into fastboot, I'll be able to root my phone and attempt to install the mobile OS I have ready.
Otherwise, I think I might be able to install a microSD card with the OS but, I don't think that will work if I can't get into the option to boot from a separate location (I believe that's called fastboot). But, then again... I think the phone needs to be rooted first... Then that brings me to the previous issue.
Details and Information
The phone details (as far as I see) are:
When I remove the battery I can see:
FCC ID: ZMFH810
IC ID: 2703C-H812
Model Number: LG-H812
I'm not exactly sure what KDZ file I got but the name is: PR H810PR10a_02.kdz, I also have the _04.kdz
I'm using H815 as my compile for the mobile OS, I may switch to H810 when I get back to that point.
Useless information: I still have the original leather backing... Removed from the phone because I didn't like it. If I find it, I can ship it to someone.
That's about it... I am very terrible about research and using Google properly (I have no idea why, I think it's a terrible flaw to have but, I have it). So, if you find the solution by typing words I didn't use or finding a similar post, I am very sorry. Hope I have everything posted here to help solve the issue, linking to posts that can resolve the issue or posting questions on what I might be missing will help.
Thanks in advance for the support of this community,
Lilrock
Click to expand...
Click to collapse
Well first of all you need to unlock your phone. H812 can't be unlocked officially though. Check my sig for the only unofficial one. Once unlocked you can flash custom ROMs but first of all you should read about ARB (antirollback) also in my sig and ensure you understand the risks all this brings. Gl.

steadfasterX said:
Well first of all you need to unlock your phone. H812 can't be unlocked officially though. Check my sig for the only unofficial one. Once unlocked you can flash custom ROMs but first of all you should read about ARB (antirollback) also in my sig and ensure you understand the risks all this brings. Gl.
Click to expand...
Click to collapse
Thanks for the positive feedback, I will attempt to fix my phone with your solution. This phone is technically almost garbage and when I fully update the phone, it runs like trash. So, if I can install a custom ROM, it may run a little better or have the tools I would personally like in a phone.
I'll let you know the details of my attempt,
Lilrock

You might be able to use:
GitHub - Lekensteyn/lglaf: LG Download Mode utility and documentation
LG Download Mode utility and documentation. Contribute to Lekensteyn/lglaf development by creating an account on GitHub.
github.com
It is more reliable then the factory tools when it works.

SkewedZeppelin said:
You might be able to use:
GitHub - Lekensteyn/lglaf: LG Download Mode utility and documentation
LG Download Mode utility and documentation. Contribute to Lekensteyn/lglaf development by creating an account on GitHub.
github.com
It is more reliable then the factory tools when it works.
Click to expand...
Click to collapse
Which is included in mAid (https://maid.binbash.rocks).. ... Even with a UI...

Thank you very much with your support. I was able to unlock, bootloader and install the image installer.
I'm on the verge of compiling and installing Ubuntu Touch on my LG G4 H812.
Hope you guys proceed with everything you're doing right!