Develop Bugs

Help - Stuck on Download Mode

I rooted and flashed Sphinx. The ROM somehow kept me from hearing the other person on the other line when making calls and they couldn't hear me. So I was trying to unroot by using the Flashroot tool method. And now I'm stuck on download mode.
I have a d855. How do I unroot properly and how do I get out of the download mode.
This is my first time rooting an LG phone :/

Duhhrenn said:
I rooted and flashed Sphinx. The ROM somehow kept me from hearing the other person on the other line when making calls and they couldn't hear me. So I was trying to unroot by using the Flashroot tool method. And now I'm stuck on download mode.
I have a d855. How do I unroot properly and how do I get out of the download mode.
This is my first time rooting an LG phone :/
Click to expand...
Click to collapse
Hold the power button for 10 secs to reboot to normal. <<<<<<<< Depending on what you have done >>>>>>>>>>
ENSURE that no transfers or other process are in progress or you will have a bad day. I don't know what you have done on your phone but ensure you read the thread you are following completely.
Are you trying to restore to stock? There are a few threads that you need to follow exactly or you will brick your device.

Tweakecho said:
Hold the power button for 10 secs to reboot to normal. <<<<<<<< Depending on what you have done >>>>>>>>>>
ENSURE that no transfers or other process are in progress or you will have a bad day. I don't know what you have done on your phone but ensure you read the thread you are following completely.
Are you trying to restore to stock? There are a few threads that you need to follow exactly or you will brick your device.
Click to expand...
Click to collapse
The method failed, so I gave up and wanted to just reboot. Did a batter pull and was able to get to the factory reset screen, but it just loops back to download mode.

Duhhrenn said:
The method failed, so I gave up and wanted to just reboot. Did a batter pull and was able to get to the factory reset screen, but it just loops back to download mode.
Click to expand...
Click to collapse
follow this, for your variant, it should get you back on track don't forget to check the hashes as a bad download would cause it to fail.
http://forum.xda-developers.com/showthread.php?t=2785089

Duhhrenn said:
I rooted and flashed Sphinx. The ROM somehow kept me from hearing the other person on the other line when making calls and they couldn't hear me. So I was trying to unroot by using the Flashroot tool method. And now I'm stuck on download mode.
I have a d855. How do I unroot properly and how do I get out of the download mode.
This is my first time rooting an LG phone :/
Click to expand...
Click to collapse
I don't have the links to the tread where I got these from but lets just hope I don't get banned.
1) go to download mode
2) install this and download the correct .kdz file for your phone
-Modelnumber is ...
-serial number is your imei number
- wait until the download is done
3) run the lgflashtool2014.exe from this zip
-Select type= cdma
-phone mode= Diag
-reset time=33000
-Should be like this when You run it
-select kdz file= is where you need to find the kdz file you just downloaded(step 1)
-then press cse flash
-in the now pop-up window select start
-select your language
-ignore error (cannot connect to lg server)
-check progress on phone up to 100% then boots in recovery installs and restarts
-wait untill it goes to the welcom screen then you can unplug
-now the most inportant step Like my post
to enter download mode do this:
--You must switch off the device to start the process.
--Then press and hold the “Volume Up” and connect the USB cable from phone to PC.
--Use the original USB cable. Because, other device’s cable may not be detected in the Computer. So, only we recommend it to use the original-- one that you got it when you bought the phone.
--Wait for the driver installation on PC.
--Then you will get the download mode screen in your phone.
--That’s it.

I have the opposite problem, can't get into download mode haha
Sent from my LG-D855 using Tapatalk

suljo94 said:
I don't have the links to the tread where I got these from but lets just hope I don't get banned.
Click to expand...
Click to collapse
I can't find the .kdz file. I have the D85010d.
Also, i ran the original lg firmware, I also get an error saying it was unsuccessful or i may have keyed in something incorrect.
When I run perform the TOT method, I get the "device model is different".
So, d85010d was stock and I flashed sphinx d855... where they incompatible? im assuming no because the phone ran fine aside from the issue i stated on the original post.
would like more help.

Duhhrenn said:
I can't find the .kdz file. I have the D85010d.
Also, i ran the original lg firmware, I also get an error saying it was unsuccessful or i may have keyed in something incorrect.
When I run perform the TOT method, I get the "device model is different".
So, d85010d was stock and I flashed sphinx d855... where they incompatible? im assuming no because the phone ran fine aside from the issue i stated on the original post.
would like more help.
Click to expand...
Click to collapse
have you tried looking for it with the first link?
Sent from my LG-D855 using XDA Premium 4 mobile app

suljo94 said:
have you tried looking for it with the first link?
Sent from my LG-D855 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Okay, it installed but i'm stuck on the boot screen. Tried to do a factory reset, but it just loops right back to the boot screen.
But the installation completed. Does this mean I'm back to stock though and root is gone??

Same problem here with my LG G3 (F400L)
I tried everything TOT& DLL files KDZ Files no thing work for me.

I have the same problem im stuck in download mode and i cant find the kdz =O
I need to know if something can resolve this problem , my device is a lg g3 850 10 d and i installed the room sphinx for the lg D855 and was incompatible because the dialer did not work properly and try with original tot for my device and dont work with this method.. so i need the ORIGINAL KDZ for the lg G3 D850 10d know where to find???

Hey men you can find the solution of your issue?
Duhhrenn said:
Okay, it installed but i'm stuck on the boot screen. Tried to do a factory reset, but it just loops right back to the boot screen.
But the installation completed. Does this mean I'm back to stock though and root is gone??
Click to expand...
Click to collapse
i Have exactly the same problem of you... im istalling the sphinx room and try to back to stock in the 855 version and my version is 850 10 d and my phone get in a download mode don run anymore :crying:
You can ressolve finally the problem or what do you do with your phone????

Duhhrenn said:
So I was trying to unroot by using the Flashroot tool method. And now I'm stuck on download mode.
I have a d855. How do I unroot properly and how do I get out of the download mode.
Click to expand...
Click to collapse
I was in your position. Once you enter the download mode it is *almost* impossible to get out without removing the battery. I've heard a lot of suggestions like pressing the power button for 10 or 20 seconds or even doing that in combination with other keys, BUT the ultimate truth is that you have to press and keep holding power button for at least 1 minute. I didn't time exact seconds, but it was ridiculously long time. Probably it will take you less time removing the back and re-sit the battery, but personally I hate removing the back without serious reason
About the second question - I was unable to flash anything in LG's download mode. I'm using Ubuntu + virtualbox (Windows 7 inside), but due to issues with drivers and/or virtualbox and/or usb port forwarding I was unable to reliably connect and flash the stock kdz image. Fortunately I've sent the phone back to the LG repair office and they re-flashed the firmware for me.
---------- Post added at 04:46 PM ---------- Previous post was at 04:41 PM ----------
masmusica said:
so i need the ORIGINAL KDZ for the lg G3 D850 10d know where to find???
Click to expand...
Click to collapse
It is not exactly what you want, BUT at least you can get your latest, official KDZ file from LG.
Open in browser the following URL, but replace the xxxxxxxxx
http://csmg.lgmobile.com:9002/csmg/b2c/client/auth_model_check2.jsp?esn=xxxxxxxx
where xxxxxxxx is your IMEI number
As a result you'll get an XML file that will contain the location of your latest KDZ update, which should look something like this:
http://csmgdl.lgmobile.com/dn/downloader.dev?fileKey=.../D85510L_00.kdz

how to fix download mode
for all lg phones but if you are not lg user you can contact me for any phone software issues
try freepcforanything.blogspot
1. add .com at the end of the link
2. and choose software solution (right side you can see)
3. fix all software related issues.
---------- Post added at 04:16 PM ---------- Previous post was at 04:09 PM ----------
al-motamel said:
Same problem here with my LG G3 (F400L)
I tried everything TOT& DLL files KDZ Files no thing work for me.
Click to expand...
Click to collapse
you can try reinstall software and it will work for sure and also without loosing you data i can't send direct link cause i m new user
just follow the steps
1. open browser and type freepcforanything.blogspot+.in/2015/08/software-solution.html
2. copy link and past in address bar just remove + and enter

Solution- Lg G3 Stuck in download mode.
USE TOT as describes in given link. But using USB 2.0 , it works for me on korean ver. F400S. Don't use USB 3.0
forum.xda-developers.com/showthread.php?t=2785089

BioVolt said:
I have the opposite problem, can't get into download mode haha
Sent from my LG-D855 using Tapatalk
Click to expand...
Click to collapse
If you can't get in that, then something very serious happened!
you sure you can't enter it?
Otherwise, it would mean you messed up the bootloader!

Did you fix your phone?
al-motamel said:
Same problem here with my LG G3 (F400L)
I tried everything TOT& DLL files KDZ Files no thing work for me.
Click to expand...
Click to collapse
i am also having lg g3 F4ooL
installed cloudy g3
soft bricked
boot looping
when i enter into download mode
flashtool says an error that
*cant change to Download mode*
Download fail
what can i do?

Hi guys, i know it's an old post but i get the same issue.
I was following this tutorial https://linustechtips.com/main/topic/1058206-lg-g3-lineageos-tutorial/
I was on lollipop.
I initially downgraded to kitkat (V10e) using LG UP and then rooted with purple drake.
In the following reboots, "kernel error" occurred.
So I tried to flash the kitkat stock version again but without success.
I'm stuck in download mode and tried to flash both the kitkat version, the lollipop and the marshmallow, through .tot and .kdz, I tried both with LG UP, LG Flash tools v 1.8 and with LG flash Tools 2014 but in all cases unsuccessful because the phone reboots before it ends.
Now I don't know what to try anymore. Do you have any solution, please?
Thanks in advance.

[Q] My G3 is Softbricked - $20 to the first person that can help me fix it!

I'm going crazy here and I need my phone to work!
I have an LG G3 on Verizon.
I rooted it and edited a part of build.prop to change the DPI which got the phone stuck in a boot loop and kept popping up "the process com.android.systemui has stopped.
I tried clearing cache
I tried booting in safe mode
I then did a factory reset
My phone boots up to the Setup Wizard screen but I am STILL getting that systemui error and a com.android.phone and I can't get any further than that screen.
I then tried to use the LG FlashTool to just wipe the entire ROM and replace it with the stock one from Verizon.
This gave me a "Model Information Check FAIL!" error but I DO have the right ROM for my phone. There's only one for the Verizon G3 as far as I can tell
This led me to realizing that there is something in the build.prop that's making LGFlashTool think the proper rom actually isn't right.
I then installed the Android SDK so I can ADB into my phone. but whenever I run "abd devices" nothing shows up in the list.
I was told USB Debugging needs to be turned on in order for this to work, I don't remember if it's turned on or not with my phone and I can't get past the Setup Wizard to edit anything. I wonder if ADB is even running properly on my phone or if these errors are stopping it?
I will gladly paypal someone $20 if they can get this working for me.

Did you tried this?
http://forum.xda-developers.com/showthread.php?t=2772199

droidhd said:
Did you tried this?
http://forum.xda-developers.com/showthread.php?t=2772199
Click to expand...
Click to collapse
yes I did, that's where I got the "Model Information Check FAIL!" error

And what about this guide (if you can enter download mode):
http://forum.xda-developers.com/showthread.php?t=2785089
8) When the firmware is downloaded, boot your LG G3 into Download Mode. To do this, press and hold the Volume Up key and then plug the USB cable.
Click to expand...
Click to collapse
One of my friends saved his phone by this guide

Download mode - LG PC Suite - Restore update error.
1. Remove battery
2. Boot phone into download mode
3. Open LG PC Suite - restore update error
This method have saved me a few times.

Will adb work in one of the recovery modes even if it wasn't enabled in the full boot mode? If so, start there.
Sent from my LGLS990 using XDA Free mobile app

Regarding your USB debugging question, you would have had to turn it on in order to root the phone originally, right? If so I imagine it would still be on unless you unchecked it. You have the proper drivers set up? Anytime I've encountered issues with adb devices not returning any results the issue has been drivers.
Good luck.

droidhd said:
And what about this guide (if you can enter download mode):
http://forum.xda-developers.com/showthread.php?t=2785089
One of my friends saved his phone by this guide
Click to expand...
Click to collapse
Yup! I tried that. I got the "Model Information Check FAIL!" error
robalm said:
Download mode - LG PC Suite - Restore update error.
1. Remove battery
2. Boot phone into download mode
3. Open LG PC Suite - restore update error
This method have saved me a few times.
Click to expand...
Click to collapse
Hey thank, I haden't tried this but just gave it a go and the program is giving me errors when I try to restore update error. I don't think it's connecting to the phone.
SilverZero said:
Will adb work in one of the recovery modes even if it wasn't enabled in the full boot mode? If so, start there.
Sent from my LGLS990 using XDA Free mobile app
Click to expand...
Click to collapse
What do you mean recovery modes? You mean like Safe mode? I actually haven't tried that. I'll give it a go.
Rodeojones said:
Regarding your USB debugging question, you would have had to turn it on in order to root the phone originally, right? If so I imagine it would still be on unless you unchecked it. You have the proper drivers set up? Anytime I've encountered issues with adb devices not returning any results the issue has been drivers.
Good luck.
Click to expand...
Click to collapse
I believe I have the proper drivers, I installed drivers and the phone is showing up in device manager as Alright.

Try hooking it up to the lg support tool and select uprade recovery.
Download and install support tool
Open tool
Plug in phone with phone on.
Top right select options/upgrade recovery
Let it do its thing.
Lg support tool
https://www.dropbox.com/s/1ckig41xdqoi2u1/B2CAppSetup.exe?dl=0

When you looked for phone in device manager did you change the port to com41? I forgot to do that and got the error in LG Flash Tool

Bro your motherboard is done with take it to service center

Hey everyone...it ended up being a stupid fix, I just tried flashing it on another computer and I didn't get the error? I have no idea why it worked.

jpf566 said:
Hey everyone...it ended up being a stupid fix, I just tried flashing it on another computer and I didn't get the error? I have no idea why it worked.
Click to expand...
Click to collapse
Oh man should've told you that. Sometimes its just a driver acting up and you have to manually delete them in the device manager. Sometimes there marked with a symbol .
please hit thanks if i helped in any way. send from my g3 d852 beast

jpf566 said:
Hey everyone...it ended up being a stupid fix, I just tried flashing it on another computer and I didn't get the error? I have no idea why it worked.
Click to expand...
Click to collapse
Sometimes it's the simplest solution that's hardest to find. Glad it all worked out for you.

So who won the 20 bucks? XD

Money's not important. The problem' fixed, this is what's important ; )

Ferindel said:
Money's not important. The problem' fixed, this is what's important ; )
Click to expand...
Click to collapse
True! that's what this forum is about :highfive:

[Q] Weird Bricked please help.

I have really searched and searched whatever i could but could not achieve any thing sorry for opening a new tread but i am really desperate for fixing my G.
So to start i was on Art Mod v7 and i saw that he posted a black theme so i installed it after installing some system stop responding what i guessed that it might be i didn't wipe cache, well i did that and got into soft brick, i am not blaming him for any thing it was all me , so i should have flashed new kdz but i didn't do that i flashed teenybin Files i dont know why i did that but i did resulted in a different kind of brick.
So problem is i have fastboot i have download mode but device some times get detected on download some times it doesn't when it did i tried flashing kdz through lg kdz flasher but resulted in continuous operation break also no driver is detected in fastboot and more over no recovery as it is in secure boot. I am a noob so please do bear my questions.
do kindly help LGOG is in continous bootloop more to add.
some what LGNPST detects phone in download mode the same application given with teenybin.
Kindly do help i know about android i just read silently but this time i am unable to solve it.

What system do you have on the machine that you're trying to flash the KDZ file? Did you install the LG driver?
I had trouble to flash kdz on my device from Windows 8.1 64bit. The flash would freeze after some time and nothing would happen. Try it maybe on another computer but after installing all the needed drivers.
Which software do you use to flash the KDZ file?

thank you for replying
malimukk said:
What system do you have on the machine that you're trying to flash the KDZ file? Did you install the LG driver?
I had trouble to flash kdz on my device from Windows 8.1 64bit. The flash would freeze after some time and nothing would happen. Try it maybe on another computer but after installing all the needed drivers.
Which software do you use to flash the KDZ file?
Click to expand...
Click to collapse
Win 7.1 well i know it freezes and for me it usually unfreezes after the kdz unpacks
well for kdz i used this
http://forum.xda-developers.com/showthread.php?t=2010624
bro please could you link some one to this post who might help ?

Irazor73 said:
Win 7.1 well i know it freezes and for me it usually unfreezes after the kdz unpacks
well for kdz i used this
http://forum.xda-developers.com/showthread.php?t=2010624
bro please could you link some one to this post who might help ?
Click to expand...
Click to collapse
I used the LG Flash Tool 2014 to flash the KDZ file
here is the link: http://www.mediafire.com/download/b2z1etctmettop3/LG_Flash_Tool_2014.rar
Type: 3GQCT
PhoneMode: CS_Emergency
It took me a few tries to get it working, it always stopped at 10% giving some silly error. I dont remember exactly what it was but after few tries it all went okay.
Hope it will help

Thank you bro for agian replying
malimukk said:
I used the LG Flash Tool 2014 to flash the KDZ file
here is the link: http://www.mediafire.com/download/b2z1etctmettop3/LG_Flash_Tool_2014.rar
Type: 3GQCT
PhoneMode: CS_Emergency
It took me a few tries to get it working, it always stopped at 10% giving some silly error. I dont remember exactly what it was but after few tries it all went okay.
Hope it will help
Click to expand...
Click to collapse
But it didnt help either

i am getting this error
malimukk said:
What system do you have on the machine that you're trying to flash the KDZ file? Did you install the LG driver?
I had trouble to flash kdz on my device from Windows 8.1 64bit. The flash would freeze after some time and nothing would happen. Try it maybe on another computer but after installing all the needed drivers.
Which software do you use to flash the KDZ file?
Click to expand...
Click to collapse
seems to be device is recognized in download mode because its asking for drivers like mako drivers
error what i am getting is
please disconnect the cable from the phone in order and remove and connect the battery
power on the cell phone and press the restart button to resume update
if lg support tool is stopped abnormally try with (options)-(upgrade recovery) in tool menu
so shall i do or there is an alternative?

Irazor73 said:
seems to be device is recognized in download mode because its asking for drivers like mako drivers
error what i am getting is
please disconnect the cable from the phone in order and remove and connect the battery
power on the cell phone and press the restart button to resume update
if lg support tool is stopped abnormally try with (options)-(upgrade recovery) in tool menu
so shall i do or there is an alternative?
Click to expand...
Click to collapse
I'm sorry but I really have no more ideas on how to help you. I did not have similar problems, I had a problem when my phone didn't want to boot anywhere except download mode. But the flash went through after a few tries.
Maybe you should try to flash it on a different computer? Install drivers and everything again and try to flash again. There may be a problem with drivers or something

I got it, done it
malimukk said:
I'm sorry but I really have no more ideas on how to help you. I did not have similar problems, I had a problem when my phone didn't want to boot anywhere except download mode. But the flash went through after a few tries.
Maybe you should try to flash it on a different computer? Install drivers and everything again and try to flash again. There may be a problem with drivers or something
Click to expand...
Click to collapse
Well i have retrieved my mobile from qusb_dmode means from hardbrick :victory:
alot of info trust me alot of it

Irazor73 said:
seems to be device is recognized in download mode because its asking for drivers like mako drivers
error what i am getting is
please disconnect the cable from the phone in order and remove and connect the battery
power on the cell phone and press the restart button to resume update
if lg support tool is stopped abnormally try with (options)-(upgrade recovery) in tool menu
so shall i do or there is an alternative?
Click to expand...
Click to collapse
I have the same problem, at around 10% of flashing i get the same error:
"please disconnect the cable from the phone in order and remove and connect the battery
power on the cell phone and press the restart button to resume update
if lg support tool is stopped abnormally try with (options)-(upgrade recovery) in tool menu "
What did you end up doing? I've been trying for weeks to unbrick my phone i even took it to 3 cellphone repair guys in my town and no one knows how to unbrick it.
Please get back to me! Im stuck.

LG G4 bootloop.... Need expert help... Ready to pay the price

Hello,
I had been using a H815T, locked bootloader, running Seven HD rom v6.1 for more than 2 months flawlessly. Suddenly yesterday my phone was in charge and it restarted and went into bootloop. Since I tried many things and I went to some local technicians as well as one LG engineer, but all failed to gimme any solution. And I don't have any warrenty, I couldn't ask for a replacement for anyone.
So here's what I tried:
1. Flashing international KDZ
2. Flashing default KDZ
3. Formatting from recovery mode
4. Changing battery
Here's what works:
1. Download mode
2. Recovery mode
So I am ready to pay if anyone gimme a solution out of this. Any help will be appreciated as I am in real trouble coz I cannot afford a new phone now.
With thanks

nipun1110 said:
Hello,
I had been using a H815T, locked bootloader, running Seven HD rom v6.1 for more than 2 months flawlessly. Suddenly yesterday my phone was in charge and it restarted and went into bootloop. Since I tried many things and I went to some local technicians as well as one LG engineer, but all failed to gimme any solution. And I don't have any warrenty, I couldn't ask for a replacement for anyone.
So here's what I tried:
1. Flashing international KDZ
2. Flashing default KDZ
3. Formatting from recovery mode
4. Changing battery
Here's what works:
1. Download mode
2. Recovery mode
So I am ready to pay if anyone gimme a solution out of this. Any help will be appreciated as I am in real trouble coz I cannot afford a new phone now.
With thanks
Click to expand...
Click to collapse
that block at 9% and told you to remove batery unplug phone etc etc?

i have same problem and no 2nd phone here -.- we need a Updated LG Flash Tool 2014 to flash the 20A.kdz

fr33kiLL said:
i have same problem and no 2nd phone here -.- we need a Updated LG Flash Tool 2014 to flash the 20A.kdz
Click to expand...
Click to collapse
unfortunaly we can wait a long time maybe ...

nipun1110 said:
Hello,
I had been using a H815T, locked bootloader, running Seven HD rom v6.1 for more than 2 months flawlessly. Suddenly yesterday my phone was in charge and it restarted and went into bootloop. Since I tried many things and I went to some local technicians as well as one LG engineer, but all failed to gimme any solution. And I don't have any warrenty, I couldn't ask for a replacement for anyone.
So here's what I tried:
1. Flashing international KDZ
2. Flashing default KDZ
3. Formatting from recovery mode
4. Changing battery
Here's what works:
1. Download mode
2. Recovery mode
So I am ready to pay if anyone gimme a solution out of this. Any help will be appreciated as I am in real trouble coz I cannot afford a new phone now.
With thanks
Click to expand...
Click to collapse
stock recovery or twrp..

Google~Android said:
stock recovery or twrp..
Click to expand...
Click to collapse
we have not access at twrp anymore .... and kdz method doesnt work . phone recognized in all lg software ... support tool 9% and issue

shudoha said:
we have not access at twrp anymore .... and kdz method doesnt work . phone recognized in all lg software ... support tool 9% and issue
Click to expand...
Click to collapse
did you have an unlocked bl or not?

Google~Android said:
did you have an unlocked bl or not?
Click to expand...
Click to collapse
of course for flash first twrp and after flash all autoprime files and after this .. impossible to have access at twrp . hard reset work . but nothing happens boot loop kdz for rollback doesnt work too . still blocked at 9% on the tool and 0 on my phone and ask me to remove the battery etc etc i did that too much time . but for nothing and the worst . bridge .. support tool recognize my phone like H815 then no driver problem

i have unlocked BL but didnt have access to ADB and Fastboot(idk why) and got stock recovery after flashing so no chance to go in TWRP

Does the phone freeze at random times? Like no matter where its at, sometimes it boots to the operating system?

Hardware
It's starting to sound more and more like a MEM BLOCK corruption..

Have you tried this: Firmware to Stock with kdz and tot?

Noo

shudoha said:
that block at 9% and told you to remove batery unplug phone etc etc?
Click to expand...
Click to collapse
No..nothing like that

mr turtle droid said:
It's starting to sound more and more like a MEM BLOCK corruption..
Click to expand...
Click to collapse
What's that and what's the remedy? And usually what causes it?

martinsavvy said:
Does the phone freeze at random times? Like no matter where its at, sometimes it boots to the operating system?
Click to expand...
Click to collapse
To me it used to happen sometimes while charging. I had to manually switch off the screen and when i switched on the screen, it became normal for a while. I thought it was due to heavy xposed customizations.

michael08071984 said:
Have you tried this: Firmware to Stock with kdz and tot?
Click to expand...
Click to collapse
That's the KDZ method. Yah I tried it as I mentioned.

michael08071984 said:
Have you tried this: Firmware to Stock with kdz and tot?
Click to expand...
Click to collapse
tested but like i told you .... blocked at 9% and remove battery unplug etc etc and nothing happend

Try this:
copy all zip files you need to reflash (10D or similar) to a memcard
Also download latest twrp and copy it to the directory where you have adb.exe
Open a Command prompt on your PC (where adb is located) and powerup the phone,
open up the Device Manager on your PC to see when the adb device is there,
in the moment where you see the adb device fire up the comand:
adb reboot bootloader
if that works enter the comand:
fastboot boot twrp-2.8.7.0-h815.img
this will boot directly into Twrp without flashing twrp and you can try things from twrp
I hope this will help here, helped me with the phone from a friend of me who had a similar problem.

fire3d said:
Try this:
copy all zip files you need to reflash (10D or similar) to a memcard
Also download latest twrp and copy it to the directory where you have adb.exe
Open a Command prompt on your PC (where adb is located) and powerup the phone,
open up the Device Manager on your PC to see when the adb device is there,
in the moment where you see the adb device fire up the comand:
adb reboot bootloader
if that works enter the comand:
fastboot boot twrp-2.8.7.0-h815.img
this will boot directly into Twrp without flashing twrp and you can try things from twrp
I hope this will help here, helped me with the phone from a friend of me who had a similar problem.
Click to expand...
Click to collapse
problem boot loop when i open my phone even with hard reset that change nothing and adb said : device not found when all program like lg support or bridge recognize my phone like h815 ... then not solution

LGUP unknown model and LG flashtool not working

Hi guys,
i recently use layers for my xenonhd rom (lg f400LL)
and then i reboot then boom it goes bootloop
what i have to do?i hardbrick my phone recently and i fix that by doing the shorwire method
but rightnow i use LGUP but it says that:
http://imgur.com/KTK9Vrb
i can still access download mode but i have problems on accessing the twrp recovery because it always boot on the bootloop,i mean
i have problems on using hardware keys to access twrp.
Sir pls help me

Stiffmeistro said:
Hi guys,
i recently use layers for my xenonhd rom (lg f400LL)
and then i reboot then boom it goes bootloop
what i have to do?i hardbrick my phone recently and i fix that by doing the shorwire method
but rightnow i use LGUP but it says that:
http://imgur.com/KTK9Vrb
i can still access download mode but i have problems on accessing the twrp recovery because it always boot on the bootloop,i mean
i have problems on using hardware keys to access twrp.
Sir pls help me
Click to expand...
Click to collapse
I didn't had the same issue as you, but had a similiar one (phone didn't get discovered neither by LGUP nor LG Flash Tool). Yesterday I fixed it by following this guide:
http://forum.xda-developers.com/showthread.php?t=2785089
In particular the part where you change your device to COM41 in the device manager.
After you get it discovered by LG Flash Tool flash an official KDZ.
Reboot the phone and connect it to your Windows, allow the connection from the phone screen.
It should promt you to install drivers on the computer, do that (they are different from LG Drivers you download from the web mind you)
Now you can change your COM port back to 3 and everything should be fully discoverable by both LGUP and LG Flash Tool.

I think I replied to you on reddit (same photo) Have you tried plugging the phone in while in download mode ? Did you try installing drivers from the internet ? Coz thats how I fixed the same problem you have.

Fluffywolf said:
I think I replied to you on reddit (same photo) Have you tried plugging the phone in while in download mode ? Did you try installing drivers from the internet ? Coz thats how I fixed the same problem you have.
Click to expand...
Click to collapse
engmia said:
I didn't had the same issue as you, but had a similiar one (phone didn't get discovered neither by LGUP nor LG Flash Tool). Yesterday I fixed it by following this guide:
http://forum.xda-developers.com/showthread.php?t=2785089
In particular the part where you change your device to COM41 in the device manager.
After you get it discovered by LG Flash Tool flash an official KDZ.
Reboot the phone and connect it to your Windows, allow the connection from the phone screen.
It should promt you to install drivers on the computer, do that (they are different from LG Drivers you download from the web mind you)
Now you can change your COM port back to 3 and everything should be fully discoverable by both LGUP and LG Flash Tool.
Click to expand...
Click to collapse
Hey Bro'ssss
now i am stuck on the recovery
i always flash the rom but when i boot it always go to the recovery(twrp)

Stiffmeistro said:
Hey Bro'ssss
now i am stuck on the recovery
i always flash the rom but when i boot it always go to the recovery(twrp)
Click to expand...
Click to collapse
The method I'm describing uses Download Mode so it should work for you.. Try it and tell us the result

engmia said:
The method I'm describing uses Download Mode so it should work for you.. Try it and tell us the result
Click to expand...
Click to collapse
Thanks man its all ok now
i dont have time to explained what i did but it works
Many thanks to all of you

hey guys, LGUP will not see my phone at all(LGV10) its in download mode , but does not come up. its stuck on LG boot screen and wont go past it. any help would be appreciated... I am, or was rooted anyway, and trying to reflash again. need to in order to fix it now. thanx

1SouthernCanuck said:
hey guys, LGUP will not see my phone at all(LGV10) its in download mode , but does not come up. its stuck on LG boot screen and wont go past it. any help would be appreciated... I am, or was rooted anyway, and trying to reflash again. need to in order to fix it now. thanx
Click to expand...
Click to collapse
Just read over the thread, it's what it's here for.

Stiffmeistro said:
i dont have time to explained what i did but it works
Click to expand...
Click to collapse
You asked for other people's time to help you, but now you don't have time to explain how you made it work?
Yeah... there MIGHT be other people with the same problem, but why would you care to share.
What an as*hole you are. Another typical new buttuser ruining a great dev community.

exactly
leandeganis said:
You asked for other people's time to help you, but now you don't have time to explain how you made it work?
Yeah... there MIGHT be other people with the same problem, but why would you care to share.
What an as*hole you are. Another typical new buttuser ruining a great dev community.
Click to expand...
Click to collapse
Exactly, here I am running around in circles over this BOOST Stylo 2, just got it with MM 6.0.1 out of the box 2 days ago. I caught the 454.4mb update it has been trying to do! Got that baby downloaded! 1.02gb unzipped and renamed to kdz. Got a script for Terminal that will replace Kingroot's temp root with SuperSU but I am not going to attempt any further until I know LGUP will recognize and flash my .zip the bas****s deem not worth enough to put up for download on LG's site!
I got LGUP to recognize it in download mode, reads out LGLS775 but still says it cannot open it...............
His info on how he got it to work would prolly have solved this dillema..............
oh well
zach

ok had a LG G3 that's done this- as long as you can get download mode it should recover, YOU need to use the LG mobile support tool from LG website ( LG UP sees phone as unknown model ) run LG mobile Support tool and in option choose UPGRADE RECOVERY . follow instructions and allow to start process, it took 57 minutes to repair my phone - it will seem frozen anywhere from 0% to about 22% JUST WAIT IT OUT!! lg up / twrp flashes in 5 to 10 mins -- the LG m.s.t writes block by block and takes 1 hour +
so hints and info took 3 goes to find and start upgrade recovery - error on a couple of attempts. phone seems frozen around 10% and 15% of firmware upload -- go make a coffee drink it, go pee then come back and worry! A watched pot never boils!....

Stiffmeistro said:
Thanks man its all ok now
i dont have time to explained what i did but it works
Many thanks to all of you
Click to expand...
Click to collapse
please tell me how to solved your problem my D682 deivce is always opening on recovery but there is no recovery menu just android robot

I have same issue as op described .After unbrick my g3 f400s by short wire method i get error at 94% in tot method and red screen show these word error wrong qem =0 .After remove and put battery again mobile runing but without baseband and null imei .Plz help i need really help

Same here. LGUP Says it is not recognized, even if it says it's a LG G3 855... Trying the LG Mobile Support Tools -> UPGRADE RECOVERY using my Model/serial.
Downloading right now...
Hope it works.
I will tell you when/if I got it to work
Also: Stiffmeistro you're a ****...
---------- Post added at 03:33 AM ---------- Previous post was at 03:22 AM ----------
Sedado77 said:
Same here. LGUP Says it is not recognized, even if it says it's a LG G3 855... Trying the LG Mobile Support Tools -> UPGRADE RECOVERY using my Model/serial.
Downloading right now...
Hope it works.
I will tell you when/if I got it to work
Also: Stiffmeistro you're a ****...
Click to expand...
Click to collapse
It didn't. It's EVEN MORE broken :'(

I figured out how to get my PC to recognize my D851. Apparently all the LG software didn't like how many COM ports I have. As soon as I unplugged everything else from my PC, the software worked. In this case, it was LG Flash Tool 2014, but I couldn't get any of them to work before.

Try running LGUP as Admin!!! For me it worked!
Try running LGUP as Admin!!! For me it worked!

Thankx Bro Its Work
engmia said:
The method I'm describing uses Download Mode so it should work for you.. Try it and tell us the result
Click to expand...
Click to collapse

Hope someone can help me. I flashed a rom for a d855, d855g30 I think, and although I can access download mode all aps for flashing fail saying it's the wrong model number. Even the generic DLL file cant trick it. It still starts booting the rom but boot loops before entering. I no longer have twrp and when I try to do safe mode or factory reset I get a boot validation error or something similar. Just seem to be stuck. Im using a VS985.

One cause of LGUP "UNKNOWN"
While an old thread, it'll be found in searches. For anybody who gets "UNKNOWN" device with LGUP for the LG G3, I found that LGUP for the G3 is often distributed with the wrong DLL file. See the details here, post #11. After installing LGUP, make sure that the "model" subdirectory in the LGUP program directory is the same number as the processor in your phone, in my case c:\Program Files (x86)\LG Electronics\LGUP\model\8974 (was 8994 with the "LGUP for G3" I downloaded).
HTH