Develop Bugs

[Q] lg flash tool wont run

hi iam using lg optimus g pro and trying to flash stock firmware using LG flash tool but i wont flash and prompt low battery but i already charged it whole day..
the cause i wanna flash coz my phone hanged at LG logo boot up due to kernel flash error.. can any1 help me suggest aother tool that can flash
KDZ file into phone...Thank You

Im having exactly the same problem! Tried everything on 2 different computers. They both run Windows 7 x64, maybe that's the problem?
E986 - FreeGee bootloader - CM 10.2 5-11 nightly
I could enter cwm and wipe everything and then i reinstalled cm 10.2 again. Otherwise i would be crying now lol.
But now i still can't go back to stock

I'm also having the same problem, as long as the phone boots into download mode I think there is hope. I have the F240 version and I'm having the same problem as you guys, low battery problem even though the phone is fully charged. Right now I'm trying the "upgrade recovery" thing in the support tool, it is downloading the kdz file again, I hope that during flashing the low battery error won't pop up.
Well I'll post results.

SOLVED!
UPDATE:
Ok guys, I found a solution, I took a huge risk but it worked!
background info:
I have the F240 version, since a lot of apps come on Korean I decided to flash the Panama KDZ file successfully, I had no signal but all I had to no was flash through CWM the original baseband for F240. Since I live in Mexico, I wanted to try the Telcel kdz only to find out I like the Panama kdz better. This were I got into problems, I could not flash my phone anymore due to the "low battery & upgrade unavailable" error. I tried different computers, different files, nothing seem to work. I read that formatting the /data /system /cache partitions would solve the problem... BIG MISTAKE, my phone no longer booted, no recovery, nothing, just download mode. After a few hours a found the solution and so I decided to take the risk.
Solution found here... http://forum.xda-developers.com/showthread.php?p=44372777#post44372777
These were my steps:
- Download Flashtool v1.5.10
- Download DLL file for the F240 (LGUP_GKV)
- Download the TOT File for F240 (this file was impossible to download for me, so I decided to take the risk and downloaded this instead LG Optimus G Pro > ATT Value Pack Firmwar/ BIN_LGE980AT-01-V10k-310-410-JUN-07-2013-0.zip
from the XDA Server found in this thread http://forum.xda-developers.com/showthread.php?t=2438088
- Followed step by step instructions of post 9 here http://forum.xda-developers.com/showthread.php?p=44372777#post44372777
- and here http://forum.gsmhosting.com/vbb/f177/lg-flash-tool-free-no-need-b2b-user-pass-1628819/index2.html
- FINALLY MY F240 BOOTED TO THE ATT ROM.
REMEMBER YOU MUST READ ALL INSTRUCTIONS CAREFULLY, FOLLOW ALL STEPS AND BE WILLING TO TAKE THE RISK!
Hope this helps and it does hit the thanks button!

It's such a shame that the flashing tools for this device suck so horribly. They really are terrible, unstable, difficult to set up. About the worst I've ever used.
I still can't get Flash Tool to run on my device.

The main reason i wanted to go back to stock was because of the annoying delay when i make a call, or receive a call. And sometimes they don't hear me at all... It sucks that a prepaid phone of 15 euro's does the job better then a 500+ phone... In the end... it's a phone right?
I had the problem with stock rom so i flashed to cm 10.2 (i wiped everything before flash) hoping it would be gone but the problem is still there.
Now i found out there is a new .kdz file ( E98610D_00.kdz ) so i wanted to flash that but if i can't get flashtools to work..
* EDIT * i fixed it
What i had to:
Go to flashtools folder
Right-click UpTestEX
Go to compability tab
Select Windows 7
Hit the checkbox for run as administrator
Save
Just to make sure i left the phone on the charger for another hour after it said 100 pct.

Solved
I was experiencing the same problem. Easy way to get it done is
1. Uninstall the current mobile driver from your pc.
2. Download Latest Pc Suite from http://www.lg.com/in/support/pc-suite
3. Install it without inserting the USB.
4. Once installed restart your pc (safe side)
5. Now, remove the battery and insert it again after say 5 seconds and put your phone into download mode.
6. Let the PC and Phone install its drivers and once done open the LG Suite and under 'Mobile Device' tab select 'Restore Upgrade Errors'.
7. It'll download the stock 4.4.2 and you'll be back on track.
Let me know if you are stuck at anything.
Hit the thanks meter if this helped.
Cheers and good luck :good:

[Q] LG Optimus G Soft-Bricked? Please help me to recover my phone

Hey Guys,
First post and i already got a problem because i messed up very much
I used to have Cyanogenmod 11 on my Optimus G, but i got several crashes and i wasnt completely fine with it so i wanted to try something new. So i updated my bootloader from CWM to TWRP and wanted to flash Artmod 5.2 Rom. I was a bit fast with my wiping, so i accidentally wiped the whole phone, so that everything was gone: Cyanogenmod, new Artmod rom i wanted to flash just everything.
I read a bit and thought it shouldnt be a problem then to just sideload the new rom, which i tried to do. I used adb sideload to put Artmod on the phone, everything was fine, flashing went through but i got stuck at the LG boot logo at the start of the phone. I waited like 30 minutes and nothing did change, so i thought something was not right.
I then just wanted to go back to cyanogenmod, tried to flash that through the adb sideload procedure but i got an error which said "error executing updater binary in zip 'tmp/sideload.zip'".
I was kinda thinking something really messed up so i tried to revert the phone to stock rom with the correct KDZ file i searched with the tool linked in the FAQ, everything downloaded but when i tried to flash the KDZ it gave me an error like this:
"12:03:59 Launching SW update
12:03:59 Unpacking KDZ
12:05:10 KDZ file extracted
12:05:11 Extract file error
12:05:13
===FINISH===="
So i searched the forums again and noticed that it should be a problem with the KDZ updater tool because the KDZ file was too big to get flashed properly. I wanted to try the LG Flash Tool 2014 then which is provided here in the forums and should work, it extracted the KDZ file, then opened the LG Mobile Support Tool to flash the file on the phone but there i start to get errors again, it either said that i am already on the correct up to date software version or that i need to disconnect the USB cable, remove the battery, insert it again, restart and try again.
I used several tools for that, i even tried it with an offline method that i found in a german forum, but every method got me the same errors, so i couldn't even go back to stock anymore.
I once tried to flash Cyanogenmod then again when i realized that the error message also told me "This Rom is for a "E975", this is a "GEE"" which i did not completely understand because it should be the total same? I edited the Updater-Script in the Zip file of the rom then and removed the part where it checks for that (1st line actually), then the rom did flash properly, phone started to boot (Cyanogenmod Boot Logo was shown) but when the boot was over i got the message:
"Type Password to Decrypt Storage" with a keyboard to enter the password. (I did never set up any password for that).
Now i am completely confused what i can do the recover my phone, either to stock or just to another rom, every method i tried did not work and i dont have any other ideas.
I can go into Fastboot, Recovery and Downloadmode, but when i tried to wipe again in Recovery it says that it cant mount my data mount point (probably because the storage is encrypted).
Somebody told me to do a hard reset with the keys "Volume down and power" which i tired several times, but everything i get is just the Google boot logo and then happens nothing or i get the Google logo, then the LG logo but after that i get stuck again, I cant seem to go into the "Hard Reset" menu which i should get into with that keys.
Anybody can help me what I could try or got a solution for this? I would be very thankful. I don't wanna loose my phone

Astarooth said:
First post and i already got a problem because i messed up very much
Click to expand...
Click to collapse
Don't worry, that's pretty standard scenario for the first post...
I wanted to try the LG Flash Tool 2014 then which is provided here in the forums and should work, it extracted the KDZ file, then opened the LG Mobile Support Tool to flash the file on the phone but there i start to get errors again, it either said that i am already on the correct up to date software version or that i need to disconnect the USB cable, remove the battery, insert it again, restart and try again.
Click to expand...
Click to collapse
Flash Tool 2014 works great for me every time, so try it again. Make sure you disconnect from the Internet before running it (yank out your LAN cable, or disable your WiFi), so it doesn't attempt to connect to LG servers. And don't forget to put your KDZ file in the same directory with the tool. It should go through just fine. That's by far the easiest method to revert back to stock, to get you to a clean starting point.
"This Rom is for a "E975", this is a "GEE"" which i did not completely understand because it should be the total same?
Click to expand...
Click to collapse
Umm... No, they are not the same. E975 is "geehrc", and there is no such OEM ID as "gee". There are many different OG variants. For the cross-reference between the models and OEM IDs, you can look here. Generally, you should stick to the ROMs that are designed for your model, unless you know exactly what you are doing, when trying to flash a ROM from a different platform.

kt-Froggy said:
Don't worry, that's pretty standard scenario for the first post...
Flash Tool 2014 works great for me every time, so try it again. Make sure you disconnect from the Internet before running it (yank out your LAN cable, or disable your WiFi), so it doesn't attempt to connect to LG servers. And don't forget to put your KDZ file in the same directory with the tool. It should go through just fine. That's by far the easiest method to revert back to stock, to get you to a clean starting point.
Umm... No, they are not the same. E975 is "geehrc", and there is no such OEM ID as "gee". There are many different OG variants. For the cross-reference between the models and OEM IDs, you can look here. Generally, you should stick to the ROMs that are designed for your model, unless you know exactly what you are doing, when trying to flash a ROM from a different platform.
Click to expand...
Click to collapse
Well i tried Flash Tool 2014 again and seem to get the same error that wants me to disconnects as it stops at the same position like it always did, also doesn't matter if I am connected to the internet or not, everytime it doesn't run through. This time I couldn't even read the stuff that was written in the LG Mobile Support tool because it only shows "????".
Heres a Screenshot:
The settings i made should be the right ones I think, the phone does get recognized by the computer when i plug it in because of the sound that windows makes.
I clearly dont't know what I can try anymore...
And according to the roms: well i only used roms for the E975, which is exactly my phone model, thats why i was wondering about that error message i got
Artmod is for E975, the CM11 was for E975, i even tried Mokee rom but i always got same error messages...

Nobody got another idea? I really am confused because if i can enter downloadmode and recovery there should be a way to get my phone back working.
Anybody knows where i can get maybe some older KDZ Files to go to 4.1.2 Stock rom and try to flash these?

problem
Astarooth said:
Nobody got another idea? I really am confused because if i can enter downloadmode and recovery there should be a way to get my phone back working.
Anybody knows where i can get maybe some older KDZ Files to go to 4.1.2 Stock rom and try to flash these?
Click to expand...
Click to collapse
Contact me on [email protected] and ill help u over teamwiewer.

Astarooth said:
Well i tried Flash Tool 2014 again and seem to get the same error that wants me to disconnects as it stops at the same position like it always did, also doesn't matter if I am connected to the internet or not, everytime it doesn't run through. This time I couldn't even read the stuff that was written in the LG Mobile Support tool because it only shows "????".
Heres a Screenshot:
The settings i made should be the right ones I think, the phone does get recognized by the computer when i plug it in because of the sound that windows makes.
I clearly dont't know what I can try anymore...
Click to expand...
Click to collapse
I don't know why you are seeing "???", but here is a couple of things regarding the settings, based on your screenshot:
1. Type should be CDMA (yours is 3GQCT).
2. PhoneMode should be DIAG (yours is CS_EMERGENCY).
3. I would suggest using CSE Flash for a full format (you are using Normal Flash).
Remember, this is a hacked tool, so the settings might not make perfect sense, comparing to the original ones. Just try following the instructions in the OP of the Flash Tool 2014 thread. Like I said, works every time for me...

kt-Froggy said:
I don't know why you are seeing "???", but here is a couple of things regarding the settings, based on your screenshot:
1. Type should be CDMA (yours is 3GQCT).
2. PhoneMode should be DIAG (yours is CS_EMERGENCY).
3. I would suggest using CSE Flash for a full format (you are using Normal Flash).
Remember, this is a hacked tool, so the settings might not make perfect sense, comparing to the original ones. Just try following the instructions in the OP of the Flash Tool 2014 thread. Like I said, works every time for me...
Click to expand...
Click to collapse
I don't know why i see "???" also, but it didn't matter
I just tried the settings you told and used CSE Flash which worked out really well.
No i am back to 4.4.2 LG Stock rom. I think the root is gone now, but one thing i wanna ask is if my bootloader is still unlocked and custom recovery is still on it?
Anyway, thank you so so much! I appreciate your help! Thank you!

Astarooth said:
I don't know why i see "???" also, but it didn't matter
I just tried the settings you told and used CSE Flash which worked out really well.
No i am back to 4.4.2 LG Stock rom. I think the root is gone now, but one thing i wanna ask is if my bootloader is still unlocked and custom recovery is still on it?
Click to expand...
Click to collapse
Glad to hear you are back in business. After flashing KDZ, the root is definitely gone, your BL is locked, and the recovery is stock. You will need to do all the necessary steps again: root, unlock the BL and flash custom recovery.

[Q] LG G Pro F240L, no recovery at all, and no root to flash one with

So I have an LG G Pro F240l
So essentially, because I flashed the wrong recovery (the F240k, as that's what I thought the phone was), this means I have no recovery.
I cannot root my phone, because basically the recovery doesn't exist.
I can use adb.
I can't do anything after booting other than use ADB, because "LG IMS has stopped working" will constantly appear and impede my ability to achieve anything (this occured after flashing the new lolipop update, which while it technically worked, I should have done a factory reset before doing it.
KDZ files are only the roms, I can flash those fine.
I have a 4.4 rom, and the new lolipop build in terms of those files.
I am unable to locate the tot or dll files I need for my F240l
First, removing LG IMS would make life easier, as that should theoretically fix the problem, making the OS at least useable.
Secondly, how would I go about getting myself a recovery that works (even the stock recover), and flashing it without already having a recovery?
Is there a way I can temporarily root the phone without going into recovery at all?
Please help, I'd rather not have a $160 paperweight..
Edit: I've gotten the ROM working, but I still have no way to root or install a recovery.

arbitrarygrill said:
So I have an LG G Pro F240l
So essentially, because I flashed the wrong recovery (the F240k, as that's what I thought the phone was), this means I have no recovery.
I cannot root my phone, because basically the recovery doesn't exist.
I can use adb.
I can't do anything after booting other than use ADB, because "LG IMS has stopped working" will constantly appear and impede my ability to achieve anything (this occured after flashing the new lolipop update, which while it technically worked, I should have done a factory reset before doing it.
KDZ files are only the roms, I can flash those fine.
I have a 4.4 rom, and the new lolipop build in terms of those files.
I am unable to locate the tot or dll files I need for my F240l
First, removing LG IMS would make life easier, as that should theoretically fix the problem, making the OS at least useable.
Secondly, how would I go about getting myself a recovery that works (even the stock recover), and flashing it without already having a recovery?
Is there a way I can temporarily root the phone without going into recovery at all?
Please help, I'd rather not have a $160 paperweight..
Edit: I've gotten the ROM working, but I still have no way to root or install a recovery.
Click to expand...
Click to collapse
Make sure you have LG Suite installed and of course all the drivers. Put the phone into download mode and engage Repair Upgrade Errors in LG Suite. You should get back to stock.

tanclo said:
Make sure you have LG Suite installed and of course all the drivers. Put the phone into download mode and engage Repair Upgrade Errors in LG Suite. You should get back to stock.
Click to expand...
Click to collapse
I just did this, all it did was re-flashed the same rom I already had (presumeably the .kdz) file. The recovery is still missing and only showing a an android with a compartment open and a red exclamation point.

arbitrarygrill said:
I just did this, all it did was re-flashed the same rom I already had (presumeably the .kdz) file. The recovery is still missing and only showing a an android with a compartment open and a red exclamation point.
Click to expand...
Click to collapse
This is a wild shot in the dark, but try holding vol down, home, power.. then wait for prompt and confirm hard reset with power button. then try the lg suite "repair upgrade" again while in download mode. Hope you can sort it out.

LG G4 H815 Euro - Troubles flashing stock ROM

Hello to all of you,
Thanks in advance for any help you can provide.
I bought second hand a LG G4 H815 with CyanogenMod 14 already installed on it.
Everything was fine until I installed my Ebanking apps, that would not function with an unlocked bootloader. I needed to return to a clean factory safe state...
It was the second time I flashed a rom in my whole life, the first one was a Galaxy S plus years ago.
I followed all the instructions for the KDZ flash in this tutorial but I stumbled upon a "Upgrade stopped due to error" in LG flash tool.
I retried 3 or 4 times but with no luck. I verified that the ROM was correct for my model and it was. European and all...
I tried LGUP but my phone is unknown ( at least it's detected)...
I read some posts and told myself "I probably have messed up something, let's try it again with a fresh thing"... I clicked on the factory reset button and carried on.
There the phone booted on TWRP (That i didn't know existed before this). As I explored the menus with a TWRP google search on the computer, I began to realize that the factory reset was maybe a bad thing to do with a custom rom. I tried to reboot but I always end up booting on TWRP.
I re-tried to flash in download mode, but with always the "Upgrade stopped due to error".
I also tried to flash directly from TWRP a stock rom. Didn't work.
I was beginning to lose it and tried to flash the CM14 version I had before, juste to have a working phone again, but even this didn't work... I'm stuck with a TWRP phone
I need some help there...

FamousCarpet said:
Hello to all of you,
Thanks in advance for any help you can provide.
I bought second hand a LG G4 H815 with CyanogenMod 14 already installed on it.
Everything was fine until I installed my Ebanking apps, that would not function with an unlocked bootloader. I needed to return to a clean factory safe state...
It was the second time I flashed a rom in my whole life, the first one was a Galaxy S plus years ago.
I followed all the instructions for the KDZ flash in this tutorial but I stumbled upon a "Upgrade stopped due to error" in LG flash tool.
I retried 3 or 4 times but with no luck. I verified that the ROM was correct for my model and it was. European and all...
I tried LGUP but my phone is unknown ( at least it's detected)...
I read some posts and told myself "I probably have messed up something, let's try it again with a fresh thing"... I clicked on the factory reset button and carried on.
There the phone booted on TWRP (That i didn't know existed before this). As I explored the menus with a TWRP google search on the computer, I began to realize that the factory reset was maybe a bad thing to do with a custom rom. I tried to reboot but I always end up booting on TWRP.
I re-tried to flash in download mode, but with always the "Upgrade stopped due to error".
I also tried to flash directly from TWRP a stock rom. Didn't work.
I was beginning to lose it and tried to flash the CM14 version I had before, juste to have a working phone again, but even this didn't work... I'm stuck with a TWRP phone
I need some help there...
Click to expand...
Click to collapse
uninstall any drive for g4 from pc and reinstall again and lgup. now reboot phone to download mode when lgup is open first check upgrade opsion and when open kdz check refurbish opsion and start. good luck

Thank you for your answer
Still no luck
Uninstalled drivers
Rebooted PC
Reinstalled the drivers
Still unknown device

The best way to flash stock image is to use official LG Bridge app. Download it, turn off your phone, connect it to PC while holding volume up button - phone will go into download mode. Then there is option for software restore in LG Bridge but i won't tell u where exactly. If it won't work i would try on another PC. If it won't work maybe you would be able to flash stock image trough send_command but i won't help you with it.

FamousCarpet said:
Thank you for your answer
Still no luck
Uninstalled drivers
Rebooted PC
Reinstalled the drivers
Still unknown device
Click to expand...
Click to collapse
open lgup torn off the phone press volume up insert usb cable wait to see download mode on phone release up button and see if everything go fine

Thank you a lot Avantu, the LG Bridge did the trick! I now have a factory rom!

LG G4 H815 Download Mode reboots after ~10 seconds

Hello, first of all I want to apologise if this problem was already discussed, I tried searching in threads and also using the old friend google, but found nothing related.
So, yesterday, I managed to flash the a.o.s.c.p cypher OS (https://forum.xda-developers.com/g4/development/g4-cypheros-t3680102), Oreo version, and after I tried rooting with Magisk I've got bootloop issues with the rom. After this, I reinstalled the zip file and it managed to go back to the OS, but every installed app would crash when tried to open. Because I did not find my backups (not too organised, I know) I tried flashing through LG UP the "LGH815 EU Nougat 7.0 BySezerSimsek.tot" file I had downloaded on my laptop, unfortunatelly, after 10~ seconds, the download mode just restarted and since then (though, it was doing this before I tried to flash with LG Up, but I thought that after I start flashing it will not reboot...), everytime I try to boot my device either normal or to recovery mode, it goes automatically to download mode, where it stays for 10 seconds and then reboots (So I'm not able anymore to use LG UP).
Also, tried LGMobile Support tool, but because I cannot keep the phone in download mode more than 10 seconds, it fails to do anything, it finished to download a firmware for it, but was unable to flash it.
Is there any chance I can "revive" it? the battery was about 50% when I started the first try with download mode, so now, it should be around 20-30% I guess.
In Download Mode, in the box, it says:
633A B49
Modified
P.S.1: After reading some more threads, I found that some people were stuck at 9% while flashing with lg up, but for me, as I said before, the download mode just keeps restarting no matter what I do with it ( even if I just leave it not connected to the pc)
P.S.2: After some more flashing with LGUP tries, I came to conclusion that the download mode restarts after ~17 seconds, and now, in the rectangle it says:
633A B56
Modified
P.S.3: I have been trying to flash "Europe H81520D_00_0115.kdz" and sometimes, if I get the timings right, I can get up to 25% (it restarts at 9%, ~19% and then 24-25%, so, it doesn't always give error after restarting and reconnecting to LG UP). I used the .dll extracted from .kdz file.

Hello, i have the exact same problem as yours with the same custom rom.
My phone stays around 20 seconds in download mode, i can launch LG UP to flash H81520i but 20 seconds is just not enough to flash the LG G4 firmware AFAIK.
I did see that there are some ways to launch the Qualcomm emergency mode but we'll need to disassemble the phone to short two pins to force it to boot in this mode.

I finally found the solution ! Follow this tutorial : https://forum.xda-developers.com/g4/general/guide-proper-h815-unbrick-qfil-files-t3709212 You'll need to disassemble the phone in order to do this tutorial, after you've done the emmc flash you will need to reflash a rom with LGUP.

Nopraz said:
I finally found the solution ! Follow this tutorial : https://forum.xda-developers.com/g4/general/guide-proper-h815-unbrick-qfil-files-t3709212 You'll need to disassemble the phone in order to do this tutorial, after you've done the emmc flash you will need to reflash a rom with LGUP.
Click to expand...
Click to collapse
Thank you for the reply.
I already fix my G4, but unfortunatelly I do not have like a detailed fix because: I went to a "Phone repair shop" and I left my phone there for one day. As I said, before I was not able to boot into recovery, the phone was restarting in download mode after ~17 seconds, and I had no idea about the battery percentage.
The next day I took back the phone and the guy there told me that there was not much he could do, but when I got home, the moment I tried to boot it, it went to recovery mode (twrp) where I tried to install a ROM (I forgot which one, but it was a .zip) and it failed to mount /cache. After that, I tried booting into download mode where it stayed for as long time as I needed without restarting. I was trying to flash 20D version (failed at 25% everytime) until I found this thread where the advice was to use the 20P version. After that it just worked fine.
So, I have no idea what did the guy from the "repair shop", I don't now if it was just related to my battery "running out of juice" or maybe he used any other "magic" box with tools for android smartphones (I've got back my phone with ~60% battery).
Also, before I went to the repair shop, I tried a method I found on xda, unfortunately I could not find the link right now, where I had to format a micro sd card and kind of "flash" (it's not actually flashing) a file to the SD card, put it inside the phone and just boot into Download mode (I'm not sure if it affected somehow the state of my phone)