Develop Bugs

LG Flashtool for who stuck in U+ LTE logo, bootloop, soft brick (only for F240x)

Hi everyone,
I got F240L for about 2 months.
Got software problem last months from a post http://forum.xda-developers.com/showthread.php?t=2380374
Repair to some phone shop, he got no clue neither. Left my phone in CWM.
So, I use KDZ Updater + download KDZ file from pan.baidu.com (get it to work again).
I got curious, so I install Dungeon Hunter 4 again. Again, software problem occurs, even I uninstall the game. KDZ Updater and LG Mobile Support Tool left my phone stuck in U+ LTE logo.
Browse the web, then I read someone whose using LG Flashtool (it need DLL and TOT file) to flash the phone.
Search those two files every web, finally got it.
LG Flashtool step by step guide http://forum.gsmhosting.com/vbb/f177/lg-flash-tool-free-no-need-b2b-user-pass-1628819/index2.html
And got LGUP_GKV.DLL from extracting F240L10t_00.kdz from pan.baidu.com (see attachment), this file has the same size for F240K and F240S, so it must be compatible for F240L, F240S, F240K.
And got TOT file from http://www.gaojituan.com/thread-90-1-1.html or http://optimusforums.com/threads/f240-optimus-g-pro-firmware-downloads.7679
I hope this solution might help someone who ever got this problem.
NB : After 600 seconds flashing progress using LG Flashtool, don't put your phone in LG SOFTWARE MODE. Somehow, the phone got it reboot in DOWNLOAD MODE, and LG Flashtool will reflash your phone for the 2nd time (start from 1% progress again).

It not work with Hard Brick (black screen). tried it, not success.

khengvantha said:
It not work with Hard Brick (black screen). tried it, not success.
Click to expand...
Click to collapse
has anyone started to jtag fix the hard brick yet ??

Hard brick issue
Sorry, I'm also a noob here.
Can your phone go to DOWNLOAD MODE ?
I read on hongkong website (got it translate from google) 2 weeks ago, someone already try LGNPST, KDZ Updater, R&D Tool, LG Mobile Support Tool, still didn't work. The other guy recommend that you should have it fix by LG guy in Korea, or use JTAG device.
I even don't know what JTAG device is.
Maybe someone in this forums can explain you how.
Sorry if my word can be misleading.
I'll update the thread to delete the word "Hard Brick"

You are a wonderful and creative
It has succeeded with me

Glad could help.
In the mean time, enjoy this super AWESOME phone.

chimmot307 said:
Glad could help.
In the mean time, enjoy this super AWESOME phone.
Click to expand...
Click to collapse
Hi I'm stuck man. Having problems with maps and so I reset now the phone stays in CWM try to reboot but back to CWM. Cant flash rom from sd card or external card. PLease help.
Where did you download KDZ files etc?

chimmot307 said:
Hi everyone,
I got F240L for about 2 months.
Got software problem last months from a post http://forum.xda-developers.com/showthread.php?t=2380374
Repair to some phone shop, he got no clue neither. Left my phone in CWM.
So, I use KDZ Updater + download KDZ file from pan.baidu.com (get it to work again).
I got curious, so I install Dungeon Hunter 4 again. Again, software problem occurs, even I uninstall the game. KDZ Updater and LG Mobile Support Tool left my phone stuck in U+ LTE logo.
Browse the web, then I read someone whose using LG Flashtool (it need DLL and TOT file) to flash the phone.
Search those two files every web, finally got it.
LG Flashtool step by step guide http://forum.gsmhosting.com/vbb/f177/lg-flash-tool-free-no-need-b2b-user-pass-1628819/index2.html
And got LGUP_GKV.DLL from extracting F240L10t_00.kdz from pan.baidu.com (see attachment), this file has the same size for F240K and F240S, so it must be compatible for F240L, F240S, F240K.
And got TOT file from http://www.gaojituan.com/thread-90-1-1.html or http://optimusforums.com/threads/f240-optimus-g-pro-firmware-downloads.7679
I hope this solution might help someone who ever got this problem.
NB : After 600 seconds flashing progress using LG Flashtool, don't put your phone in LG SOFTWARE MODE. Somehow, the phone got it reboot in DOWNLOAD MODE, and LG Flashtool will reflash your phone for the 2nd time (start from 1% progress again).
Click to expand...
Click to collapse
Could you please provide instructions on how to use KDZ updater? Where did you download it from or if you could PM? thanks
I'm downloading software via LG Mobile support but at the moment its going to take 30hrs!!

KDZ updater & LG Mobile Support Tool won't help.
You need to download LG Flashtool 1.5 is the latest version on the link that on #1 post. Once you download, follow the procedure how to install the LG Flashtool.
LG Flashtool needs 2 files (DLL & TOT) to flash your phone.
You can download DLL file from the attachment on #1 post. The attachment is compressed in RAR format. You can extract it using Winzip, Winrar, or 7zip.
The TOT file is on the 2 link #1 post (chinese website & optimus forums). You need to download the approriate type according to your phone (F240L, F240K, F240S) each files about 2 GB size. I suggest you use any download manager, to prevent disconnect from bad interference or time out. I can't post the TOT file here too due to slow network in my country (Indonesia) .
After you collect those DLL & TOT files, here's step by step :
1. Disconnect any internet connection
2. Set the computer time before Juli 15th, 2012 ( I set March 1st, 2012)
3. Double click LG Flashtool. Username, password, and Registration key are on the link #1 post
4. Insert DLL file in DLL column. Browse to where you put the DLL file.
5. Insert TOT file in Software column. Browse to where you put the TOT file.
6. Click OK
7. Click the GEAR icon, set only port #1 that ticked. Other ports are UNTICKED. Click OK.
8. Press & hold volume UP and DOWN, while connecting the USB cable to your computer (set to DOWNLOAD MODE). Until the phone shows "DOWNLOAD MODE" on the center of the screen.
9. Open System Properties. Set COM port for LG Handset using port 41.
10. Click Arrow Right in LG Flashtool, disconnect USB cable for 5 seconds. Reconnect USB cable.
11. The FLASH process in progress, wait for 600 seconds and shows green background say "PASS".
12. Disconnect USB cable and close the LG Flashtool application.
13. Release the battery, wait for 3 minutes.
14. Do FACTORY RESET in SETTINGS. End of FLASHING process.
Enjoy !!!

Thanks for that very clear instructions.
Sent from my LG-F240L using Tapatalk 2

I need LGE988.DLL. Can any one help?

chimmot307 said:
Hi everyone,
I got F240L for about 2 months.
Got software problem last months from a post http://forum.xda-developers.com/showthread.php?t=2380374
Repair to some phone shop, he got no clue neither. Left my phone in CWM.
So, I use KDZ Updater + download KDZ file from pan.baidu.com (get it to work again).
I got curious, so I install Dungeon Hunter 4 again. Again, software problem occurs, even I uninstall the game. KDZ Updater and LG Mobile Support Tool left my phone stuck in U+ LTE logo.
Browse the web, then I read someone whose using LG Flashtool (it need DLL and TOT file) to flash the phone.
Search those two files every web, finally got it.
LG Flashtool step by step guide http://forum.gsmhosting.com/vbb/f177/lg-flash-tool-free-no-need-b2b-user-pass-1628819/index2.html
And got LGUP_GKV.DLL from extracting F240L10t_00.kdz from pan.baidu.com (see attachment), this file has the same size for F240K and F240S, so it must be compatible for F240L, F240S, F240K.
And got TOT file from http://www.gaojituan.com/thread-90-1-1.html or http://optimusforums.com/threads/f240-optimus-g-pro-firmware-downloads.7679
I hope this solution might help someone who ever got this problem.
NB : After 600 seconds flashing progress using LG Flashtool, don't put your phone in LG SOFTWARE MODE. Somehow, the phone got it reboot in DOWNLOAD MODE, and LG Flashtool will reflash your phone for the 2nd time (start from 1% progress again).
Click to expand...
Click to collapse
It's asking to sign in before downloading file. Any other links for firmware!

riz157 said:
It's asking to sign in before downloading file. Any other links for firmware!
Click to expand...
Click to collapse
Almost there but message keeps showing download error?

chimmot307 said:
Hi everyone,
I got F240L for about 2 months.
Got software problem last months from a post http://forum.xda-developers.com/showthread.php?t=2380374
Repair to some phone shop, he got no clue neither. Left my phone in CWM.
So, I use KDZ Updater + download KDZ file from pan.baidu.com (get it to work again).
I got curious, so I install Dungeon Hunter 4 again. Again, software problem occurs, even I uninstall the game. KDZ Updater and LG Mobile Support Tool left my phone stuck in U+ LTE logo.
Browse the web, then I read someone whose using LG Flashtool (it need DLL and TOT file) to flash the phone.
Search those two files every web, finally got it.
LG Flashtool step by step guide http://forum.gsmhosting.com/vbb/f177/lg-flash-tool-free-no-need-b2b-user-pass-1628819/index2.html
And got LGUP_GKV.DLL from extracting F240L10t_00.kdz from pan.baidu.com (see attachment), this file has the same size for F240K and F240S, so it must be compatible for F240L, F240S, F240K.
And got TOT file from http://www.gaojituan.com/thread-90-1-1.html or http://optimusforums.com/threads/f240-optimus-g-pro-firmware-downloads.7679
I hope this solution might help someone who ever got this problem.
NB : After 600 seconds flashing progress using LG Flashtool, don't put your phone in LG SOFTWARE MODE. Somehow, the phone got it reboot in DOWNLOAD MODE, and LG Flashtool will reflash your phone for the 2nd time (start from 1% progress again).
Click to expand...
Click to collapse
Thanks for that when I try it I get message download fail in red? What I'm I doing wrong?
It goes to 100% then download fail. I think you faced similar issue not sure what I'm doing wrong.

You need to follow step #9

This is LGE980 DLL http://forum.xda-developers.com/showthread.php?t=2302660

Tot file download
chimmot307 said:
KDZ updater & LG Mobile Support Tool won't help.
You need to download LG Flashtool 1.5 is the latest version on the link that on #1 post. Once you download, follow the procedure how to install the LG Flashtool.
LG Flashtool needs 2 files (DLL & TOT) to flash your phone.
You can download DLL file from the attachment on #1 post. The attachment is compressed in RAR format. You can extract it using Winzip, Winrar, or 7zip.
The TOT file is on the 2 link #1 post (chinese website & optimus forums). You need to download the approriate type according to your phone (F240L, F240K, F240S) each files about 2 GB size. I suggest you use any download manager, to prevent disconnect from bad interference or time out. I can't post the TOT file here too due to slow network in my country (Indonesia) .
After you collect those DLL & TOT files, here's step by step :
1. Disconnect any internet connection
2. Set the computer time before Juli 15th, 2012 ( I set March 1st, 2012)
3. Double click LG Flashtool. Username, password, and Registration key are on the link #1 post
4. Insert DLL file in DLL column. Browse to where you put the DLL file.
5. Insert TOT file in Software column. Browse to where you put the TOT file.
6. Click OK
7. Click the GEAR icon, set only port #1 that ticked. Other ports are UNTICKED. Click OK.
8. Press & hold volume UP and DOWN, while connecting the USB cable to your computer (set to DOWNLOAD MODE). Until the phone shows "DOWNLOAD MODE" on the center of the screen.
9. Open System Properties. Set COM port for LG Handset using port 41.
10. Click Arrow Right in LG Flashtool, disconnect USB cable for 5 seconds. Reconnect USB cable.
11. The FLASH process in progress, wait for 600 seconds and shows green background say "PASS".
12. Disconnect USB cable and close the LG Flashtool application.
13. Release the battery, wait for 3 minutes.
14. Do FACTORY RESET in SETTINGS. End of FLASHING process.
Enjoy !!!
Click to expand...
Click to collapse
PLZ TELL ME HOW CAN I DOWNLOAD TOT FILE baidu is not working

You can download from http://www.gaojituan.com/thread-90-1-1.html or http://optimusforums.com/threads/f240-optimus-g-pro-firmware-downloads.7679/
Click on the latest TOT file according to its date and your phone (F240L, F240S, F240K).
I've test on F240L v10i from http://www.gaojituan.com/thread-90-1-1.html works very well on pan.baidu.com.
Which file are you try to download ? Which phone do you use ?

I tried the procedures you guys mentioned above, but my phone does not seem to be being flashed.
Everything seems alright, up until disconnect the USB cable and wait for 5 secs to reconnect, but after reconnect, nothing happen....
mine is F240S, does it matter? How do I extract DLL from TOT or KDZ files?
Thanks in advanced
Dennis
---------- Post added at 11:01 PM ---------- Previous post was at 10:23 PM ----------
I actually finally got it flashed, all the procedures are correct, just need to time that 5 secs accurately.
Also, anyone with F240S needs to stay with the version of Flashtool that OP provided, any version higher than 1.4 seems giving me error.
Thanks very much for the info.
Dennis

Please help...
Guys plzzz help... I have F240s. first i was rooted on stock and then flashed cwm along with loki patch file (easy-cwm-f240s.zip file). i wanted EDGE on my
phone (i m in pakistan and only gprs works here on this phone) so i flashed panama rom by flash tool but lost the signal service.. i Wiped system,data,cache in CWM and restored data of my stock
rom from CWM but still no signals ( mobile model was still showing up e980h from panama rom) then i factory reset and flashed Cm 10.1 of f240s (i think i may have wiped system ,cache and date before it). now when i power on, LG logo appears on screen and in left top side it says:
Secure booting Error
Cause: boot Certification Verify
unfortunately i also had below 30% battery when i flashed cm10.1. NOW if i go to download mode and use mobile support tool
and flash tool to update it says: battery level is low and upgrade is unavailable, fully recharge ur battery and try again.
I Have used a battery stand charger to charge for 3 hrs but after checking phone software setting for 3,4 minutes it still says the same thing about battery again n again. should i let it charge to 100% no
matter how long it takes and then try or do something elsee... plzzz helppp

How to make a perfect unrooted

HOW TO MAKE A PERFECT UNROOTED
ATTENTION
Before continuing, make... BACKUP, BACKUP, BACKUP, ...
If rooted ever your phone system detects it, and if you enter in Download this screen will look
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
In the box below you can read:
B73 and B100 = This is the State of the battery
Click to expand...
Click to collapse
And one of these three States:
ROOTED (Red) = The phone is rooted
UNROOTED (Pink) = The phone is not rooted, but once rooted. THIS STATE I'VE NEVER SEEN
UNROOTED (White) = The phone was never rooted.
Click to expand...
Click to collapse
According to the European legislation a terminal may be rooted without so we lose the warranty, but instead to use the phone we have to accept LG conditions that say that we can not customize the phone.
As it seems, commented by Spanish users that took your phone Technical Assistance Service (T.A.S.) still this rooted and with installed CWM, T.A.S. spent in warranty, so this method is not necessary, but you never know with whom you can bump sat, so here you have remove the ROOT and leave the phone as something out of factory.
UNROOTED METHOD
INFORMATION
This method serves to take the phone to the T.A.S., or if you want to leave it clean.
Download a ROM to your terminal, operated and country, use this link LG Phone Firmware G2
It enters to the CWM or TWRP Recovery.
Now get from:
CWM - Wipe Data / Factory Reset
TWRP - Advanced Wipeo, and the beams all but the SD.
Go to the reset menu or advanced and click on turn off.
While you press Volume+ connect the USB to the PC, enter Download Mode, as the images above
It runs Windows and follow this LG G2 Stock Firmware (Go Back to Stock)
Click to expand...
Click to collapse
CHECK IF IS or IS NOT ROOTED
In the dial pad type:
For the D800 3845#*800#
For the D801 3845#*801#
For the D802 3845#*802#
ETC
Go to the bottom of the menu and click on LG RCT then to Display Result
There are two possible results, Not rooted or Rooted
Click to expand...
Click to collapse

You are here too?! God Blessed G2 !

Gosh thanks so much!! I initially thought that the D802 doesn't have a root trip whoops.
Sent from my LG-D802 using xda app-developers app

TWRP - Advanced Wipeo, and the beams all but the SD.
Click to expand...
Click to collapse
Include internal storage, or not?

one problem with all that - "UNROOTED (White) = The phone was never rooted." should read "UNROOTED (White) = The phone isn't rooted at this time."
my d802 always returns to that state after I unroot and go back to stock I have to do 2 x full factory reset and using the power button down and vol down trick then if you go into download mode it always shows as unrooted in white.

Homero2 said:
HOW TO MAKE A PERFECT UNROOTED
ATTENTION
Before continuing, make... BACKUP, BACKUP, BACKUP, ...
If rooted ever your phone system detects it, and if you enter in Download this screen will look
In the box below you can read:
CHECK IF IS or IS NOT ROOTED
Click to expand...
Click to collapse
Hi, is it going reset root triper?? And, phone would still say rooted or unrooted! please advise.

twiztednibbz said:
one problem with all that - "UNROOTED (White) = The phone was never rooted." should read "UNROOTED (White) = The phone isn't rooted at this time."
my d802 always returns to that state after I unroot and go back to stock I have to do 2 x full factory reset and using the power button down and vol down trick then if you go into download mode it always shows as unrooted in white.
Click to expand...
Click to collapse
I don't understand what you mean
You say that there is an easier way of unrooted?

Homero2 said:
I don't understand what you mean
You say that there is an easier way of unrooted?
Click to expand...
Click to collapse
basically I cannot talk for any other model apart from d802 as this is what I have. but basically all you need to do to get it to show unrooted is to download the lg mobile support tool > open it > plug in usb while holding power and vol up with phone OFF to get into download mode > open the LG mobile support tool > go to options (top right) and press upgrade recovery.... the tool will download the original stock firmware onto the pc then install it on the phone. DO NOT unplug it until 100% on the PC. the phone will reboot about 80% on the pc but phone will have reached 100%. next do 2 factory resets using the power button and vol up method and you will find the unrooted status re-appears if you go back into download mode. Its also worth noting that it works best and flawlessly on com port 4 some ppl have experienced issues on other com ports.
obviously I accept no responsibility for you breaking your phone if you try it but I have done this at least 70 x to get out of bad fashes and it works every single one.
takes you about 30 min for the file to download but without that file downloading its probably about 5 minutes user input the longest/hardest bit being getting into the factory reset screen. lol.

twiztednibbz said:
basically I cannot talk for any other model apart from d802 as this is what I have. but basically all you need to do to get it to show unrooted is to download the lg mobile support tool > open it > plug in usb while holding power and vol up with phone OFF to get into download mode > open the LG mobile support tool > go to options (top right) and press upgrade recovery.... the tool will download the original stock firmware onto the pc then install it on the phone. DO NOT unplug it until 100% on the PC. the phone will reboot about 80% on the pc but phone will have reached 100%. next do 2 factory resets using the power button and vol up method and you will find the unrooted status re-appears if you go back into download mode. Its also worth noting that it works best and flawlessly on com port 4 some ppl have experienced issues on other com ports.
obviously I accept no responsibility for you breaking your phone if you try it but I have done this at least 70 x to get out of bad fashes and it works every single one.
takes you about 30 min for the file to download but without that file downloading its probably about 5 minutes user input the longest/hardest bit being getting into the factory reset screen. lol.
Click to expand...
Click to collapse
How do you choose which com port to use? Yes, I've experienced issues with com port 5
Sent from my LG-D802 using xda app-developers app

mab71 said:
How do you choose which com port to use? Yes, I've experienced issues with com port 5
Sent from my LG-D802 using xda app-developers app
Click to expand...
Click to collapse
ok so if press the start button on windows then type in device manager in the little box at bottom and press enter it will open up.
now put the phone in download mode (be sure to use a rear usb port too, then when the pc recognizes it go to your device manager, it will show Ports (COM & LPT) in the list and when you press the little plus sign to the left of the name you will see the phone and the port number being used. i.e. LGE AndroidNet USB Serial Port(COM7).
right click it and press properties > port settings tab > advanced > the COM port number is at the bottom of the box click it and select 4. it will probably tell you something else is using it but that is fine it makes no difference click ok then yes and ok again. Now your phone should show as COM Port 4 in the device manager. now close device manager and carry on using lg support tool.

twiztednibbz said:
basically I cannot talk for any other model apart from d802 as this is what I have. but basically all you need to do to get it to show unrooted is to download the lg mobile support tool > open it > plug in usb while holding power and vol up with phone OFF to get into download mode > open the LG mobile support tool > go to options (top right) and press upgrade recovery.... the tool will download the original stock firmware onto the pc then install it on the phone. DO NOT unplug it until 100% on the PC. the phone will reboot about 80% on the pc but phone will have reached 100%. next do 2 factory resets using the power button and vol up method and you will find the unrooted status re-appears if you go back into download mode. Its also worth noting that it works best and flawlessly on com port 4 some ppl have experienced issues on other com ports.
obviously I accept no responsibility for you breaking your phone if you try it but I have done this at least 70 x to get out of bad fashes and it works every single one.
takes you about 30 min for the file to download but without that file downloading its probably about 5 minutes user input the longest/hardest bit being getting into the factory reset screen. lol.
Click to expand...
Click to collapse
OK, I have personally tried port 5, and 45 port and not have had problems, since this method which I intend to use the official program, with the difference that we say you must firmware flasher.
Thank you for your information, I used the method proposed for some years with my KM900 and my P990, and I have to say that it works perfectly, and not only that, also the firmware that is installed is suitable to the country, model and telephone operator.
The two methods do the same thing, but his left it because I sometimes giving problems, there were times that said that the firmware that had was the more modern and wouldn't update, I am referring to below the D802 models
PD:
Factory Reset does so from 3845#*802#?

Homero2 said:
OK, I have personally tried port 5, and 45 port and not have had problems, since this method which I intend to use the official program, with the difference that we say you must firmware flasher.
Thank you for your information, I used the method proposed for some years with my KM900 and my P990, and I have to say that it works perfectly, and not only that, also the firmware that is installed is suitable to the country, model and telephone operator.
The two methods do the same thing, but his left it because I sometimes giving problems, there were times that said that the firmware that had was the more modern and wouldn't update, I am referring to below the D802 models
PD:
Factory Reset does so from 3845#*802#?
Click to expand...
Click to collapse
yeah I agree I have tried upto 9 different ports now and all seem to work for me but that is not the case for everyone. I know the whole process is supposed to be done on port 4 which is why I suggested it.
you are most welcome if I help but one person with my ramblings then that's a plus...
yes very true that it will put on the correct firmware for country model and telephone operator!
I have also encountered the same problems myself and this method I have never ever ever experienced one.

twiztednibbz said:
takes you about 30 min for the file to download but without that file downloading its probably about 5 minutes user input the longest/hardest bit being getting into the factory reset screen. lol.
Click to expand...
Click to collapse
Hello! Does your method work with a custom recovery and after the reset will it be gone?

i unrooted my D802 and when it was done my storage reduced from 32gb to 10gb . do you have any idea how to fix it?

What are differences between 10A-10B-20A-20B? I have a 16 GB Italy H3G D802, which rom have I to download?

I've checked a logs and found that com.lge.hiddenmenu.RCT_Check/RootingCheckActivity is running during that flow.
Then, dumped all framework and app files and searched for that activity.
Founded in HiddenMenu.odex file, deodexed ...
Actually they are reading value from that file: /persist/rct.cfg
There is second file that this activity cheks: /persist/rct
There is a logic there if file not exist /persist/rct then show RCT check disabled.
May be that will permanently disable root check?
There could be some other application (service or script) that actually doing root check and write this rct.cfg file.
---------- Post added at 03:59 PM ---------- Previous post was at 03:15 PM ----------
Tried to remove that two files.
But device restoring them after rebooting.
Needs to find a way how to log who is accessing that file.

Excuse me, I cannot understand.
I have to:
1 - Install CWM or TWRP
2 - Make a Full Wipe using CWM or TWRP
3 - Update firmware using normal procedure wich downloads and install the correct firmware on my phone
Is this correct?
I ask because doing only the 3rd point I still have "rooted" in download screen.
Perhaps I am missing the full wipe in TWRP.
Any help appreciated

OK, found description for rctd tool
Some workaround:
1. If you create two folders in target folder with the same names as that rct and rct.cfg names than rctd won't able to overwrite then, and from hidden menu device won't display rooted status;
2. Remove rctd tool and put clean files rct and rct.cfg from the unrooted device. Files could be found there.
But still OTA detect root

Redwid said:
OK, found description for rctd tool
Some workaround:
1. If you create two folders in target folder with the same names as that rct and rct.cfg names than rctd won't able to overwrite then, and from hidden menu device won't display rooted status;
2. Remove rctd tool and put clean files rct and rct.cfg from the unrooted device. Files could be found there.
But still OTA detect root
Click to expand...
Click to collapse
Ok, looks like from 4.4.2 rtcd no longer exists but you need the files in /persist folder.
So this should not be a problem.
You root only adb, you take the files and put them in a safe place.
You do whatever you want.
You restore the 2 files (while you're root)
You do a full wipe and a firmware recovery.
Thos should take it to a total unroot phone.
Am I right?

lmerega said:
Ok, looks like from 4.4.2 rtcd no longer exists but you need the files in /persist folder.
So this should not be a problem.
You root only adb, you take the files and put them in a safe place.
You do whatever you want.
You restore the 2 files (while you're root)
You do a full wipe and a firmware recovery.
Thos should take it to a total unroot phone.
Am I right?
Click to expand...
Click to collapse
Sorry, don't know. I'm trying to find a way install OTA update on rooted device.
Don't like to do a full wipe.
---------- Post added at 10:28 AM ---------- Previous post was at 09:34 AM ----------
BTW to find out if you have root checker do this command in the shell:
Code:
ps | grep rctd

Unbricking LG G Pad in QHSUSB_DLOAD mode

Hello
This is the process that I used to unbrick the LG G Pad 8.3 tablet.
Note 1: The operating system on my PC is Windows XP SP3 x86
Note 2: The same process should also work on LG G Pad 10.1 (With a different .tot file)
1. First of all you should make sure that the G Pad is detected when connected to the PC.
The device should be seen as QHSUSB_DLOAD in Other Devices section in Device Manager.
hxxp://i.imgur.com/IawJZq0.jpg
2. Install the QHSUSB Driver for your operating system.
The driver can be found here:
hxxp://mega.nz/#!HlpViaTJ!NPACjSQtTjGWdYIj3kHO3bGfmAotaSSQindmgRY9VJ4
I have used the driver from the "checked" folder.
Reconnect the tablet and you should now see the device as Qualcomm HS-USB QDLoader 9008 (COMxx) under the Ports section in Device Manager.
Take a note of the COM port number.
hxxp://i.imgur.com/IR7uUCB.png
3. Download the .tot image file for you tablet model.
I have used the one from here (LG G Pad 8.3 V500 4.4.2):
hxxp://androidfilehost.com/?fid=23329332407581518
4. Now you need the LG BoardDiag tool.
Download this one from here:
hxxp://mega.nz/#!XwgkXTAR!JnAAXKBQoezT7CcxRSVkSQlPFr4AXcvfm6oJbw4bht4
Please use only this one even if you have another BoardDiag. I have tried other versions and this was the only one that worked. For the other versions I always got some error:
failed during loading flash programmer
or
device not found in dload trying flash programmer
With this tool we will extract the .tot rom image first.
Unrar the archive and open BoardDiag3.99c application.
Click on the ... button next to BIN from the Image Extraction section on the bottom of the BoardDiag application and browse to the .tot file you downloaded at step 3.
Then click on the ... button next to DIR and browse to a folder to extract the files in.
Click on the Extract button and wait for the files to be extracted.
After the extraction is complete, close the BoardDiag application.
hxxp://i.imgur.com/Kw0ZhUv.jpg
5. Now we will perform some cheks on the tablet.
Open the BoardDiag application again.
Now select the AP check and EMMC TEST checkboxes from the Board Diag Test section on the top-left.
Also choose the G-pro (APQ8064) on the AP Chipset dropdown selection box. Choose the Com Port that you took a note of at step 2. Select as the Target Dir the folder where you extracted the .tot image file at step 4. These settings are in the top-right side of the BoardDiag application. Make no other changes to the settings.
Now Click on the big START button and wait for the checks to be made.
If everything is OK you should see under the Test Results section the green text PASS both under the AP and EMMC. Leave the BoardDiag application open. Now you can proceed to step 6.
6. Now we will Flash the files to the tablet.
Now you will also check the SDRAM TEST checkbox on the left top side of the BoardDiag application. The other settings were already made in step 5. Click the START button again.
After performing the checks you should see that the files from the image (aboot.mbn, boot.mbn, etc.) are written to the tablet.
After that, the BoardDiag tried to reset the tablet, but it failed and it ended with FAIL for SDRAM under the Test Results section. But the files were already written on the tablet.
7. After that I disconnected and reconnected the tablet to the PC. Nothing was detected, or so I thought, because I could see that in Device Manager something was happening. It was like refreshing itself every 5 seconds or so. I disconnected the tablet from the PC and I plugged in the wall charger. It turns out that the battery had no power.
After a few minutes the LG logo appeared on the screen. Nothing else was happening but I could see the LG logo. I left the tablet to charge the battery for at LEAST 3 hours. If your tablet battery is also discharged you should plug your tablet to the charger for at LEAST 3 hours.
After that I reconnected the tablet to the PC and it was detected as G Pad but it couldn't find the driver.
8. Install the LG Mobile Drivers.
You can get them from here:
hxxp://mega.nz/#!j8xikSYC!Njz3E1_PSJanzQEeZCbbEoWfxUz9TfrTVgusqBCJ2qY
After the driver installation reconnect the tablet to the PC.
It should now be connected properly.
9. Download LG Mobile Support Tool. You can use the launcher from here:
hxxp://mega.nz/#!bp5jgBQJ!xqiMyQU7z-ATlYz__0ybz2kM7boeLFNgqsu5XoPPSzo
Open LG Mobile Support Tool. You should now see the tablet is connected correctly and you should see the tablet model on the left side of the LG Mobile Support Tool. You will now go to Options and choose Upgrade Recovery. Wait for the image to be downloaded and flashed to the tablet.
After the process is completed the tablet will boot to life again.
Please write your comments bellow if you succeeded or failed. I will provide further assistance if required.
PS: I think you need to remove the battery and reinsert it after step 6. Or it could also work if you let the battery discharge completely.
Good luck!

I could not post the images and the links.
I will add them later (after I get to 10 posts).
Contact me on skype (cyadron) for the files and for other help.

nice finding.
it can be handy if we try to flash the v510 bootloader on the v500 to see if it fits and "unlocks" the pad

ckret said:
nice finding.
it can be handy if we try to flash the v510 bootloader on the v500 to see if it fits and "unlocks" the pad
Click to expand...
Click to collapse
Actually it was the only way I found that worked to unbrick this tablet.

Bricked LG G Pad
Need your help man with those files. I bricked my device after flashing wrong file. I have tried LG G2 Pro Board Diag tool and everything passes except SDRAM.
Thanks in advance for your assistance.

Links for files
Hi, I bricked my GPad and would be very interested in getting the proper files or links. How can I get them?

I will update this thread as soon as I can post links. Hopefully no more than a few days.

cyadron said:
I will update this thread as soon as I can post links. Hopefully no more than a few days.
Click to expand...
Click to collapse
Can you post links ?

This sounds very promising @cyadron, hopefully you'll be able to edit the links in soon.
@muiriddin this sounds like you should be able to revive your tablet from your science experiment.
@fefifofum posting here instead of the other thread as that would be way off topic for it.
This sounds like we'll be able to do some proper experimenting and still be able to recover if it doesn't work!

Hopefully I will be able to post the links soon. Does anyone know the minimum number of posts required to post links?

cyadron said:
Hopefully I will be able to post the links soon. Does anyone know the minimum number of posts required to post links?
Click to expand...
Click to collapse
Just put hxxp instead of h t t p.

roirraW "edor" ehT said:
Just put hxxp instead of h t t p.
Click to expand...
Click to collapse
Thank you. That worked.
Links have been added.

cyadron said:
Thank you. That worked.
Links have been added.
Click to expand...
Click to collapse
This thread should probably be pinned. You can request the moderators to do so by "reporting" your first post and ask them there. Too bad, as far as I know, there aren't any TOTs available for the VK810, although I haven't needed one yet.

I used the tutorial, but accuses ero Emmec test fails
Any solution?

edsmat said:
I used the tutorial, but accuses ero Emmec test fails
Any solution?
Click to expand...
Click to collapse
Unless there is a hardware problem with the emmc, it should work.
Try and remove the battery and put it back again.
Please also make sure you follow the steps as described.

Cluey said:
This sounds very promising @cyadron, hopefully you'll be able to edit the links in soon.
@muiriddin this sounds like you should be able to revive your tablet from your science experiment.
@fefifofum posting here instead of the other thread as that would be way off topic for it.
This sounds like we'll be able to do some proper experimenting and still be able to recover if it doesn't work!
Click to expand...
Click to collapse
It would be nice to get my science experiment working again... I hopefully will have some time to follow this process this weekend...

hi, i have hardbrack v410 no have screen at all only qualcomm hs_usb 9008 please help me (

lgv410 said:
hi, i have hardbrack v410 no have screen at all only qualcomm hs_usb 9008 please help me (
Click to expand...
Click to collapse
Read everything you can and follow instructions.
I think you'll need to search further than just this thread though. I read about someone recovering an LG device from this state but I think it was a phone.
But you'll need to find it and follow the instructions, I don't remember where I read it.

Cluey said:
Read everything you can and follow instructions.
I think you'll need to search further than just this thread though. I read about someone recovering an LG device from this state but I think it was a phone.
But you'll need to find it and follow the instructions, I don't remember where I read it.
Click to expand...
Click to collapse
thank you for you answer, can you show me where i can found this instructions to fix this problem? :/

lgv410 said:
thank you for you answer, can you show me where i can found this instructions to fix this problem? :/
Click to expand...
Click to collapse
No, I'm not here to do searches for you.

[GUIDE] LG G3 D851 Unbrick Qualcomm 9008 Fully Working... Unbrickable D851!

NOTE: Before we begin, let me tell you that from my experience the D851 does not require shorting at all. it will be identified as Qualcomm HS-USB in a brick state without any opening up, check your device manager!
Hello guys, I spent 2 weeks analyzing hex files in order to revive a D851 that I got my hands on. It was not an easy journey but I would like to share this with the devs or people who are looking at bring their bricks to life.
What I did was actually hack the Sahara programmer files that WillCracker (BoardDiag) programs use. This comes in the attached files. Seems like there was no site on the Internet sharing this unique files and thus not allowing us to unrbick the D851.
For a more detailed view of how I got these modified files created please look at this post
But with this uniquely created files we now have unbrickable D851's , I have revived one D851 phone that I had dead. Right now it already booted into download mode and it is loading the *.tot.
Instructions
Connect your D851 phone without battery via USB to a Windows Box.
Make sure you have installed the HS USB 9008 Drivers installed. If so you will find something called "Qualcomm HS-USB QDLoader 9008 (COMxx)" under device manager, make sure you check the COM Port number, as you will need this later on the next step.
Open up BoardDiag.exe (from the downloaded files here, as it includes modified files specific for D851) and select: B2 (MSM8974AC), and pick up your COM Port.
Under 'Image Extraction' select your bin which should be the *.tot file (I used LG_D851.10C_TOT&DLL.7z).
Hit the 'extract' button into a directory of your choice.
Pick under 'COM Port' the 'Target Dir' and select where you have extracted the *.tot. This will allow us to start flashing the partition files.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Select on the checkbox "AP check".
Check the box called "RESTORE BOOT IMG", in here start picking up the partitions, write each one of them (not system, userdata or cache -- those are worthless for now), and ONLY in the end flash LAF and then finally SBL*. After this you will see the phone boot up with the battery icon since you do not have a battery connected. This is when you can tell you have now the bootloader reflashed.
Unplug the USB cable, insert the battery into the phone and hold UP while hooking up the USB cable again. After doing this your phone will boot up in download mode and now you can go ahead and flash the correct firmware using a tool such as LGFlashTool.
Below you can see a screenshot of the dmesg showing that it is already in download mode (after being in QC HS USB 9008 mode)... I am so !"#$ happy
I flashed the partitions like in this other guide but please use the attached file or else it won't work.
NOTE: Do download the attached Willcracker Version I attached specific for the D851, this is a modified one and is the only type of program I managed to use to revive my phone. I cannot stop insisting that any other set of files will not work on our D851, which is what most people reported on the forums for some time.
EXTRA: Disable Windows driver update, updating the Qualcomm HS-USB driver can cause conflicts and problems on the process.
<< If you like my work here is my hat, please donate! >>​
​

hello please i ask for your help
thank you for the great work man
can you please help me in my phone has same problem now it is a month
the problem is that my phone is lg f460s
i have the tot file but because it is a different chip-set Apq8084 this app BoardDiag doesn't support it
can you please modify the app
i searched in so many Korean forums nothing there and Russian forums too
please i donate for you man if you could find .hex singleimage.bin
i gave my phone to some people here but all of them doesn't know how to solve this boot loader problem i knew it can be fixed only by medusa box or octubos box which no body have it here
i found some files which it can revive some other phones having the same processor qualcomm snapdragon 805 like Motorola turbo and nexus 6
like these images
these unbrick files can communicate with lg f460s but because it need a right singleimage and .hex files it cant fix it
please bro try to look for this model i tried for so many weeks now
and thank you again

it fully work
thank u so much
i found your port last night
and it isnt have instruction
so i do by my self with your tool

you are my hero , you saved me thank you sooo much bro , my phone booted in fastboot mode after this , i ll try to flash frimeware now , biiig thnaks to you man

Jyed said:
you are my hero , you saved me thank you sooo much bro , my phone booted in fastboot mode after this , i ll try to flash frimeware now , biiig thnaks to you man
Click to expand...
Click to collapse
No problem man. I am also so glad to have unrbicked that phone as I can now give it to my dad as his phone (a really old Samsung Galaxy S3 was dying of slowness). I hated to have a ~$200.00 brick :cyclops: not being used! And I am a big fan of this LG G3 phone.
Btw, what I did after unrbciking first after fastboot started was that I shutted down my phone by removing the battery, and disconnected the USB cable. Then I reinsrted the battery and put it in download mode by using the: 'Keep pressing up and insert the USB cable'... and after that re-flashed the *.tot using downloaded mode as it is way faster with LGFlashTool.

Amazing work man… my D851 is working now. Earlier it failed to boot in all other methods. Thank u so much

@Omar-Avelar , Man, today i've seen my pm box and checked your message and looked here, nothing to say just.
THANKS, YOU SAVED ME! THANKS A LOT.
I've set the phone in download mode now, but when it begin the d851 firmware flash says cross DL SWversion, thats because i have a frankenstain phone, thats what've caused me a brick, what i need to do to set the d851 firmware?
Look at the images
ERROR:
My phone in dload mode says that:
and my motherboard:
I suposse that it can be fixed, but what i need to do?.
THANKS AGAIN MASTER! IM SO HAPPY
Where can i donate to you? Sorry for my english haha.
Edit: i've saw your firm now i'll donate you.

adrianbravom said:
@Omar-Avelar , Man, today i've seen my pm box and checked your message and looked here, nothing to say just.
THANKS, YOU SAVED ME! THANKS A LOT.
I've set the phone in download mode now, but when it begin the d851 firmware flash says cross DL SWversion, thats because i have a frankenstain phone, thats what've caused me a brick, what i need to do to set the d851 firmware?
I suposse that it can be fixed, but what i need to do?.
THANKS AGAIN MASTER! IM SO HAPPY
Where can i donate to you? Sorry for my english haha.
Edit: i've saw your firm now i'll donate you.
Click to expand...
Click to collapse
I've faced the same fate as you because I flashed a D855 on a Phone that was a refurbished D851. Took me like a month to figure out how to unbrick it.
By the looks of it it seems that your phone still has the LAF partition of the D855 but you recovered the other bootloder partition files allowing you to boot into the download mode 'thinking' it is a D855.
I suggest you use the LGUP_8974.dll instead of the 'supposed' D851 *.dll in the *.tot files... I think that will flash the partitions regardless if it is a D855 or 851 and force enter the files.

Omar-Avelar said:
I've faced the same fate as you because I flashed a D855 on a Phone that was a refurbished D851. Took me like a month to figure out how to unbrick it.
By the looks of it it seems that your phone still has the LAF partition of the D855 but you recovered the other bootloder partition files allowing you to boot into the download mode 'thinking' it is a D855.
I suggest you use the LGUP_8974.dll instead of the 'supposed' D851 *.dll in the *.tot files... I think that will flash the partitions regardless if it is a D855 or 851 and force enter the files.
Click to expand...
Click to collapse
Well, that images posted before whas with lgup_8974.dll and gives me the errors, I think I need to modify the hex file to put it as a "d855" and makes the program recognizes it, me fear is that if I flash the d851 firmware maybe I can loose the imei a mobile information ( before the brick the phone has d855 software ) or it will not erase my efs partition ? What u recommend me ? Flash d855 or d851 tot?

adrianbravom said:
Well, that images posted before whas with lgup_8974.dll and gives me the errors, I think I need to modify the hex file to put it as a "d855" and makes the program recognizes it, me fear is that if I flash the d851 firmware maybe I can loose the imei a mobile information ( before the brick the phone has d855 software ) or it will not erase my efs partition ? What u recommend me ? Flash d855 or d851 tot?
Click to expand...
Click to collapse
If it is a D851 motherboard but seen as a D855 via firmware I would try using the *.dll of D855 and the *.tot file of D851.
Seems like while being in HS-USB 9008 mode one of the partitions was not flashed correctly and the downloader mode still sees it as D855. The other option would be to brick it again with D855 *.dll and *.tot if the first try does not work. And while being in HS-USB 9008 mode please make sure you do flash most of the partitions there (not system, nor userdata, not cache) but the rest and end up with LAF > SBL* partition. That will flash the correct *.tot files for D851 and hopefully you will see the D851 now as D851 in the downloader mode.
I believe IIRC that the LAF partition has the downloader, and that's the one I believe is still written from when you overwrote it as a D855. If you wrote SBL* before LAF it might have booted with the LAF partition of the D855.

All done! Phone works and is alive!, @Omar-Avelar i've did what i told you, i've used a hex editor in a linux distro and modified the first "D851" mention to "D855" and goodbye CrossDL error, flashed sucessly, now my phone it's a real D851 and its hardunbricked! thanks all to you, you are great!.

Thank you, sir. You are live saver.
I have bricked my phone (d851) and I had been looking for days and nothing works.
Fortunately, I went to this thread and had successfully unbrick my phone.
God bless you.
D851 unbrickable

Omar-Avelar said:
I've faced the same fate as you because I flashed a D855 on a Phone that was a refurbished D851. Took me like a month to figure out how to unbrick it.
By the looks of it it seems that your phone still has the LAF partition of the D855 but you recovered the other bootloder partition files allowing you to boot into the download mode 'thinking' it is a D855.
I suggest you use the LGUP_8974.dll instead of the 'supposed' D851 *.dll in the *.tot files... I think that will flash the partitions regardless if it is a D855 or 851 and force enter the files.
Click to expand...
Click to collapse
My case is almost similar. As per software info it was d855 before bricking. So I flashed mm kdz for d855 and bricked.then I opened the cover and found this has a d851 board. So ,as per this tutorial I flashed everything for d851.phone booted but booting into fastboot mode only no download mode. Then I followed some other tutorial and again flashed laf. Img .now it can enter in download mode. But have a big problem .As it was a real d851 rom it cant connect to 3g net work here in india(2g ok). Now I am so disappointed because such a good phone with 2g only.....
But how initially d855 rom was flashed on d851 board???? There may be a way..
Ofcourse only beacuse of thread my g3 is live now. Please help me to get full out put from that.
There are threads to manually add bands to qualcomm device.Can I go for that?

[Update; Duplicated post]

justinmartin111 said:
My case is almost similar. As per software info it was d855 before bricking. So I flashed mm kdz for d855 and bricked.then I opened the cover and found this has a d851 board. So ,as per this tutorial I flashed everything for d851.phone booted but booting into fastboot mode only no download mode. Then I followed some other tutorial and again flashed laf. Img .now it can enter in download mode. But have a big problem .As it was a real d851 rom it cant connect to 3g net work here in india(2g ok). Now I am so disappointed because such a good phone with 2g only.....
But how initially d855 rom was flashed on d851 board???? There may be a way..
Ofcourse only beacuse of thread my g3 is live now. Please help me to get full out put from that.
There are threads to manually add bands to qualcomm device.Can I go for that?
Click to expand...
Click to collapse
Yes, it is such a great feeling to be able to bring the phone back from the death.
BTW, I do believe also the phone bands can be changed using QPST since I have seen Argentinian D855 phones changed to D855P (Adding another LTE band).
You might need another phone reference (LG G3 that worka on the band you want) and using QPST might let you modify some specifics.
Go ahead and Google translate this post for analysis: http://www.grupoandroid.com/topic/112493-guia-habilitar-bandas-lte-para-argentina-en-d855-int/

Another success in reviving the dead lg g3
Omar-Avelar said:
NOTE: Do download the attached Willcracker Version I attached specific for the D851, this is a modified one and is the only type of program I managed to use to revive my phone. I cannot stop insisting that any other set of files will not work on our D851, which is what most people reported on the forums for some time.
Click to expand...
Click to collapse
Thank your thread was really helpful in getting somewhere, You are the champion :good::victory:
---------- Post added at 07:53 AM ---------- Previous post was at 07:52 AM ----------
adrianbravom said:
All done! Phone works and is alive!, @Omar-Avelar i've did what i told you, i've used a hex editor in a linux distro and modified the first "D851" mention to "D855" and goodbye CrossDL error, flashed sucessly, now my phone it's a real D851 and its hardunbricked! thanks all to you, you are great!.
Click to expand...
Click to collapse
Can you please direct me somewhere or guide by yourself on how to do this.

Hey , could anyone help me? i have a lg l40 d175f, and i have boarddiag ,the kdz files but i do not have the partition.txt, what do I have to do??? please save me, this is not a monster phone but i don't have money to buy another one

Omar-Avelar said:
[*]Open up BoardDiag.exe (from the downloaded files here, as it includes modified files specific for D851) and select: B2 (MSM8974AC), and pick up your COM Port.
Click to expand...
Click to collapse
Modified Files huh??
The miracle file is a file that has been around all along. It can be found in the Smartboot Diag Tool. Its called LGD851_ATMO_TMUS.mbn.
All you have to do is rename this file to 2nd_loader.hex and put it inside the Board DIag Tool > Model > B2(MSM8974AC) Folder. Replace this file with the old one.
Now start Board Diag tool and load and decompress your tot file, and flash away.
For other models, you could try renaming your devices mbn from the Smartboot Diag tool to 2nd_loader.hex

wow
mickeyasamoah said:
Modified Files huh??
The miracle file is a file that has been around all along. It can be found in the Smartboot Diag Tool. Its called LGD851_ATMO_TMUS.mbn.
All you have to do is rename this file to 2nd_loader.hex and put it inside the Board DIag Tool > Model > B2(MSM8974AC) Folder. Replace this file with the old one.
Now start Board Diag tool and load and decompress your tot file, and flash away.
For other models, you could try renaming your devices mbn from the Smartboot Diag tool to 2nd_loader.hex
Click to expand...
Click to collapse
can you provide same file for lg g3 f460s ? it has chipset apq8084 . thank you i advance

ExtraDemo said:
can you provide same file for lg g3 f460s ? it has chipset apq8084 . thank you i advance
Click to expand...
Click to collapse
I am currently in class. Will check when I get home.

LGUP New Tool For Flash (Kdz and TOT)

It has taken me many days to find a tool to flash KDZ AND TOT since many people show an error at 4% of FlashTool and there is no solution so this is your Post.
LGUP is a tool used by Lg for phones that still have a guarantee such as a system error or a software error.
Compatible with Windows vista/7/8/10 No macOS No Linux
Thanks to DroidTH for giving me a link
ok let's start
Renember: All will be erased in the internal memory.
Your warrantly is now avoid
Visit [How-to] Flash firmware KDZ G2 G3 G4 by LGUP On Youtube to the link
Remember that it is not channel advertising, it's just that I can not add external links
Steps to follow
Make sure you have the drivers installed correctly
Download The KDZ / TOT
Connect Lg g3 to pc (No need to enter download mode manually)
Unzip (LGUP-G2-G3.ZIP)
First install (LGUP_8974_DLL_Ver_0_5_CODEFIRE)
Second Install (LGUP_Install_Ver_1_14_3)
Enter the LGUP program that is probably hosted on your desktop
Select the Upgrade box and select the KDZ / TOT file
Wait for the process to finish (Do not disconnect the phone)
At 80% the phone will restart (not yet to be disconnected)
When you reach 100% the phone must have turned on or starting on the TMO logo
If it does not start
-------------------------------------------------- -------------------------------------------------- ----
If it does not start
---------------------------------------------- -------------------------------------------------- -----
If it restarts constantly and does not enter the system (It restarts before reaching the optimizing application)
Turn off the phone completely and remove the battery
Wait 10 seconds. And put it back
Press Vol- and on when logo is released and press them again.
Give you everything
EYE: all files on the internal SD card will be erased
A factory reset will be made and then it must be turned on normally.
If it still does not start, remove the chip (SIMCARD)
Well that's all if you have any questions please write
Sorry if I needed something, it's just that I'm new and I do not know anything about xda
I hope you understand.

When I run LGUP it says Model is Unknown, then gives an error telling me I have to choose a known Model. Drivers are installed, USB debugging is enabled, not sure what else there is missing. Please help.
my phone: (T-Mobile lg g3 d851 30e)

dricialg said:
error Unknown model.!!
my phone: (g3 d851 30e)
Click to expand...
Click to collapse
sorry you had problems
the error is one of the drivers lg
you should plug it into one of the main USB ports on your PC.
or rather entering device manager and re-assign drivers to ports.
Have you downloaded the lgup for lg g3 and g2?

Drivers are installed, USB debugging is enabled, LG PC Suite OK.not sure what else there is missing.
Download : lgup-g2-g3.zip

Solve it FIX
good after I found the problem LGUP
roms apparently change the model of the device as it changes cm11 to build Cyanogenmod 11 xx
AOSP - to AOSP rom 2 etc.
the solution would be to install a stock rom clean no matter if v10 v30 etc. The important thing is not having changed the model number and manufacturer.
I hope I have helped and sorry

that includes cloudy fa's roms

minicm94123 said:
It has taken me many days to find a tool to flash KDZ AND TOT since many people show an error at 4% of FlashTool and there is no solution so this is your Post.
LGUP is a tool used by Lg for phones that still have a guarantee such as a system error or a software error.
Compatible with Windows vista/7/8/10 No macOS No Linux
Thanks to DroidTH for giving me a link
ok let's start
Renember: All will be erased in the internal memory.
Your warrantly is now avoid
Visit [How-to] Flash firmware KDZ G2 G3 G4 by LGUP On Youtube to the link
Remember that it is not channel advertising, it's just that I can not add external links
Steps to follow
Make sure you have the drivers installed correctly
Download The KDZ / TOT
Connect Lg g3 to pc (No need to enter download mode manually)
Unzip (LGUP-G2-G3.ZIP)
First install (LGUP_8974_DLL_Ver_0_5_CODEFIRE)
Second Install (LGUP_Install_Ver_1_14_3)
Enter the LGUP program that is probably hosted on your desktop
Select the Upgrade box and select the KDZ / TOT file
Wait for the process to finish (Do not disconnect the phone)
At 80% the phone will restart (not yet to be disconnected)
When you reach 100% the phone must have turned on or starting on the TMO logo
If it does not start
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If it does not start
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If it restarts constantly and does not enter the system (It restarts before reaching the optimizing application)
Turn off the phone completely and remove the battery
Wait 10 seconds. And put it back
Press Vol- and on when logo is released and press them again.
Give you everything
EYE: all files on the internal SD card will be erased
A factory reset will be made and then it must be turned on normally.
If it still does not start, remove the chip (SIMCARD)
Well that's all if you have any questions please write
Sorry if I needed something, it's just that I'm new and I do not know anything about xda
I hope you understand.
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Click to collapse
Where are downloads

minicm94123 said:
good after I found the problem LGUP
roms apparently change the model of the device as it changes cm11 to build Cyanogenmod 11 xx
AOSP - to AOSP rom 2 etc.
the solution would be to install a stock rom clean no matter if v10 v30 etc. The important thing is not having changed the model number and manufacturer.
I hope I have helped and sorry
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Click to collapse
Hi !
How do I do all the above ?
My PC recognize the phone without problem, but LGUp won't start unless I "select a known model"... (LGUp window shows : Model = Unknown ; COM Ports = [COM5, CloudyG3] )
Problem is that my phone is softbricked after installing a new ROM, and I can only enter download mode (not even recovery). I just want to downgrade it and reflash a LG's stock ROM (or whatever ROM that would make my phone actually work !!! )
Can you help me do that ?

raf1978 said:
Hi !
How do I do all the above ?
My PC recognize the phone without problem, but LGUp won't start unless I "select a known model"... (LGUp window shows : Model = Unknown ; COM Ports = [COM5, CloudyG3] )
Problem is that my phone is softbricked after installing a new ROM, and I can only enter download mode (not even recovery). I just want to downgrade it and reflash a LG's stock ROM (or whatever ROM that would make my phone actually work !!! )
Can you help me do that ?
Click to expand...
Click to collapse
Do you still wanting help?

minicm94123 said:
Do you still wanting help?
Click to expand...
Click to collapse
YEEEESSSSSS !!!!
Please.... ?
(My phone is currently used as a toy by my 6 yo daughter ? )

LGUP "UNKNOWN" and FlashTool failure with LG G3 (and possibly others)
When I downloaded and installed LGUP with the DLL installer stated to be for the LG G3, the program did not recognise the phone, reporting it as "UNKNOWN". The LG FlashTool also failed, reporting the IMEI and PID as NULL. After spending a lot of time on this, I twigged that the DLL file in the LGUP model directory was for the 8994 processor; but the G3 has an 8974, quite different and incompatible. I located the DLL installer MSI file for 9874 devices, uninstalled LGUP and the DLLs from Windows add/remove programs, ran the 9874 DLL installer and reinstalled the LGUP program, and everything worked.
The file is, amongst other places, on https://uptoandroid.com/download-lg-up-tool-for-lg-smartphone-latest/. Do not download DLL files for LG G4, LG V10, LG G3, LG Stylo, filename LGUP_Common_DLL_Ver_1_0_28_5 .msi, but instead For LG phones based on Qualcomm Snapdragon 800 MSM8974 SoC, filename LGUP_8974_DLL_Ver_0_5.msi:.
HTH
23 Aug 19: I find that I've rediscovered the wheel. Exactly what I said was posted in 2016 - if I'd found it, it would have saved me a lot of time!