Database Develop

[Q] Note 4 boots to download mode but Kies and Odin can't detect it. Hard Bricked?

I've rooted and flashed ROMs on three previous android phones but I still consider myself something of a noob.
I have a SM-N910T that I've had for a couple of months. I was trying to flash TWRP for the first time. Windows detected the phone (as it always has in the past) and Odin detected the phone. Halfway through the download the process failed and Odin threw up an error message.
Now I get 'Firmware upgrade encountered an issue' with a straight boot. I can boot into download mode on the phone but neither Windows, Odin, or Kies can detect the phone as far as I can tell. There don't appear to be any 'unknown devices' in Device Manager. I've tried different usb ports, different cables, and tried both my laptop and desktop (both are 64-bit windows 8.1) with multiple reboots.
I'm assuming from this point that the phone is hard bricked, but I wanted to see if anyone more knowledgeable had any ideas or input.

Well this is interesting. I can't guarantee this will work, but lets try . . .
1st. Pull the battery from your phone
2nd. Disconnect all usbs from your computer and reboot it
3rd. Once your computer turns back on - open kies 3, click Tools, and then click Reinstall Device Driver. Once finished, close out of kies
4th. Manually boot phone into download mode (Vol down + Home)
5th. Open ODIN and connect phone up to computer
Let me know if the device shows in ODIN before doing anything.

Thanks for taking the time to look at my problem 147aaron.
I followed your steps carefully and ODIN still doesn't see the phone.

halfsmart said:
Thanks for taking the time to look at my problem 147aaron.
I followed your steps carefully and ODIN still doesn't see the phone.
Click to expand...
Click to collapse
Does windows make that noise that something has been connected when you hook it up? If not, it sounds like you are going to have to have it sent in for repair.

I have now also tried installing Heimdall on my Ubuntu laptop and it also fails to detect the phone:
ERROR: Failed to detect compatible download-mode device.​

147aaron said:
Does windows make that noise that something has been connected when you hook it up? If not, it sounds like you are going to have to have it sent in for repair.
Click to expand...
Click to collapse
No, it does not (it did before the failed flash). I figured as much, thanks for trying to help.
I'm guessing that the 'premium handset protection' insurance won't cover this?

halfsmart said:
I have now also tried installing Heimdall on my Ubuntu laptop and it also fails to detect the phone:
ERROR: Failed to detect compatible download-mode device.​
Click to expand...
Click to collapse
Just checking, did you run as Sudo? Or have you set udev permissions. I always forget this the first time when flashing a phone via linux.

First check that your phone is inserted to a USB2.0 port.
Secondly turn the phone completely off for a few seconds, then manually boot into download. Don't let it boot into download mode by just pressing power!
Finally after plugging it in type dmesg in the terminal, it should show your phone connecting as an USB device.
If not post the output of dmesg > dmesg.log

inconceeeivable said:
Just checking, did you run as Sudo? Or have you set udev permissions. I always forget this the first time when flashing a phone via linux.
Click to expand...
Click to collapse
Good catch. However, running as sudo I still get the same error.

halfsmart said:
Good catch. However, running as sudo I still get the same error.
Click to expand...
Click to collapse
Shoot. Sorry man.

Seems like you have a bad phone.

sfjuocekr said:
First check that your phone is inserted to a USB2.0 port.
Secondly turn the phone completely off for a few seconds, then manually boot into download. Don't let it boot into download mode by just pressing power!
Finally after plugging it in type dmesg in the terminal, it should show your phone connecting as an USB device.
If not post the output of dmesg > dmesg.log
Click to expand...
Click to collapse
Unless I reading it wrong (I'm a command-line noob as well) all USB events took place within the first couple of seconds after booting the laptop. I plugged in the phone probably a minute or so after I got to the desktop, so I don't think it's registering. [EDIT: I typed sudo dmesg | grep -i usb and scanned down the time codes on the list]
Here's the dmesg.log:

Just going to throw this out there but have your checked that reactivation lock is unchecked

fcpelayo said:
Just going to throw this out there but have your checked that reactivation lock is unchecked
Click to expand...
Click to collapse
I'm certain that I never enabled anything like that, and on the downloading screen it says 'REACTIVATION LOCK(KK): OFF'
according to a quick google reactivation lock is only available on Verizon and US Cellular models..

I was talking about the one under settings and security. But if this isn't the problem then sorry idk.

fcpelayo said:
I was talking about the one under settings and security. But if this isn't the problem then sorry idk.
Click to expand...
Click to collapse
I think we're talking about the same thing. Either way, thanks for taking the time, I appreciate it.

Help, Hardbrick LG L90

Hello guys, i'm new here. First of all english is not my native language so sorry if i make any mystakes.
I flashed my phone to Lollipop. Then i tried to install twrp (with Flashify) recovery so then i could install Xposed... but the thing is that i may have used the wrong file..
My phone doesn't start. The only sign of live that it gives is when i plugged it to the PC, the pc makes the usual sound when you plug a USB. And it shows my phone as a usb with 63MB of storage (obviouly my phone has more storage). And when i go to Disk admin it shows me all the partitios that my phone has.
Also in Devices admin it shows my phone as: LGE AndroidNet USB Serial Port (COM6)
Do you know what can i do to unbrick my phone? :crying::crying:
LG D410H with lollipop 5.0

Did you unlocked the bootloader before flashing twrp?
Did you tried to hold vol + and plug USB cable to enter in download mode?

F. Gacrux said:
Did you unlocked the bootloader before flashing twrp?
Did you tried to hold vol + and plug USB cable to enter in download mode?
Click to expand...
Click to collapse
Hello, thanks for your reply.
Yes i have tried that already. Nothing seems to work :crying:
When i tried Volume up and plug the cable it shows nothing in my phone's screen. Just in my PC i sounds like a disconected or connected device

You probably flashed the wrong bootloader, which is a fatal error.
I know users that managed to recover other phones from this brick with LGBoardDiag as explained in this topic: http://forum.xda-developers.com/lg-g2/general/fix-unbrick-lg-g2-stuck-qualcomm-hs-usb-t2933830
I don't know how to get this TOT file, but the same partitions shown can be retrieved from your KDZ in BIN extension with LGFirmwareExtract, I think it's just a matter of renaming the files.

F. Gacrux said:
You probably flashed the wrong bootloader, which is a fatal error.
I know users that managed to recover other phones from this brick with LGBoardDiag as explained in this topic: http://forum.xda-developers.com/lg-g2/general/fix-unbrick-lg-g2-stuck-qualcomm-hs-usb-t2933830
I don't know how to get this TOT file, but the same partitions shown can be retrieved from your KDZ in BIN extension with LGFirmwareExtract, I think it's just a matter of renaming the files.
Click to expand...
Click to collapse
http://forum.xda-developers.com/lg-l90/help/bootstack-flash-gone-wrong-t3120536
i have this problem exactly the same

I found this interesting topic, you probably can recover from this brick to allow you to enter in download mode using LGFlashTool (not the one that flashes KDZ) like this: http://forum.xda-developers.com/showthread.php?t=2475045
But we still need this TOT file and the DLL for your D410H that I do not know where to find or to create from the KDZ.

F. Gacrux said:
I found this interesting topic, you probably can recover from this brick to allow you to enter in download mode using LGFlashTool (not the one that flashes KDZ) like this: http://forum.xda-developers.com/showthread.php?t=2475045
But we still need this TOT file and the DLL for your D410H that I do not know where to find or to create from the KDZ.
Click to expand...
Click to collapse
But i can't go download modde :/ my phone does not show anything on it's screen..
i've been trying with this post:
http://forum.xda-developers.com/lg-g2/general/tool-unbrick-lg-g2-qualcomm-9008-board-t3072073
but it gives me the error that appears at the beggining of the thread. I unplugged it, remove battery, then put it back again and reconnect the usb, but the same problem :/ :crying:
also i have found not the TOT file but this thread:
http://forum.xda-developers.com/lg-l90/general/guide-unbrick-hard-bricked-l90-variants-t3173429

I meant that will lead you to a working download mode, which is enough to restore everything, including partition table.
I have a suggestion, you said Windows detects as a mass storage unit, can you boot Linux and follow this thread http://forum.xda-developers.com/showthread.php?t=2582142 to see if can see all the partitions?
If yes, it's just a matter of extracting the KDZ of your variant and flashing the said partitions to get a working download mode to make a complete kdz flash.

lg l90 405 is believed to be 410 dual sim
hi to all guys, I would like to submit for your ATTENTION What I And Success Knowing and possibly come to restore rate.
I am the owner of an LG L90 model d405n, Wanting to make the Unlock bootloader I used an Application That I would have to just unlock the bootloader and recovery modified Install A.
In the cell AFTER tale reality 'hack And practically dead, he would not turn on even.
I Put in search tool various programs and various vain, the cell showed no signs of life.
Then, Dandolo now hope for him I tried to go for broke, I formatted a low debits and then with an Application (umbrick) I managed to flesciare start and everything else. Now the cell was lit and was anche in update download mode '.
I downloaded the firmware 405 and KDZ I Tried to use the flash tool but the procedure is always blocked at 2% giving an error.
With the instrument of 'LG I discovered sensationally That cell was identified coming D410, exhausted from the various prove not go into port I wanted to download the KDZ model 410D and, come by magic, flash tool worked! I installed the latest version information and cellphone works beautifully!
So now I have a phone with a firmware His (among other things the 410D E anche dual sim).
I would like to restore your system orifginale, That the 405 but I'm afraid to rate other trouble ....
I hope someone can give me a hand ...

LG L90 D410 Totally bricked. Please someone help.
I an LG L90 D410. I tried to install boot loader and after rebooting the phone, it was unusable. It is not showing any QhSUB_BUlk as well as any partition in My Computer. its not showing anything in PC. Please help someone how can i unbrick my phone.

Hello please try to follow this thread http://forum.xda-developers.com/lg-l90/general/guide-unbrick-hard-bricked-l90-variants-t3173429
This works 100% it helped me unbrick my phone. Hope it will work for you as well
Enviado desde mi LG-D410 usando XDA Forums

[Solved]M7 Soft bricked,ADB/Fastboot not working,No OS as well,TWRP 2.6.3.3

Hello.I am in some kind of a trouble..I just bought a phone with firmware problems,hoping i could make it work.The problem is this,someone tried to update the firmware,unsuccesfully,and now it's stuck with no OS.I can only start recovery and bootloader.
Recovery is Teamwin 2.6.3.3.Already tried to clear cache and everything,to use an USB with OTG,but it's not recognised,ADB sideload also it's not working.
adb devices shows the phone is not connected,and FastBoot says "Waiting for device".Any idea? I've tried,read a lot,but I can't really work it out..
Also,I can't find the device in Device Manager,neither in ADB nor Fastboot.
I tried using Windows 8.1 and 7..Same deal.
Thank you!

chris_b0ss said:
Hello.I am in some kind of a trouble..I just bought a phone with firmware problems,hoping i could make it work.The problem is this,someone tried to update the firmware,unsuccesfully,and now it's stuck with no OS.I can only start recovery and bootloader.
Recovery is Teamwin 2.6.3.3.Already tried to clear cache and everything,to use an USB with OTG,but it's not recognised,ADB sideload also it's not working.
adb devices shows the phone is not connected,and FastBoot says "Waiting for device".Any idea? I've tried,read a lot,but I can't really work it out..
I tried using Windows 8.1 and 7..Same deal.
Thank you!
Click to expand...
Click to collapse
Is it a M8 or a M7, because your title says M8 but you have posted in the M7 forum.

Sorry,I am quite scared.It's M7.

chris_b0ss said:
Sorry,I am quite scared.It's M7.
Click to expand...
Click to collapse
First, follow instructions given in this post to install the latest android sdk-tools and the latest htc drivers. Also make sure you don't have HTC Sync installed on your computer.
Then connect your phone to you computer with the original cable (or any other cable already known to work for data transfer - some usb cable are only providing power), reboot the phone in bootloader mode by holding vol down and power. Make sure you see the red "fastboot usb" caption on the screen, if not use vol up/down and power to select the "fastboot" menu. Once there open a command window form the android sdk-tools folder and type "fastboot getvar all". Copy/paste the ouput of this command here (except the imei and serialno).

I've followed that,and still not working.pics attached.
It's very weird,because I was expecting for a soundfrom the Windows,like a new device connected .But ..nothing
Sent from my GT-I9100 using XDA Free mobile app

chris_b0ss said:
I've followed that,and still not working.pics attached.
It's very weird,because I was expecting for a soundfrom the Windows,like a new device connected .But ..nothing
Sent from my GT-I9100 using XDA Free mobile app
Click to expand...
Click to collapse
With your phone in bootloader/fastboot mode, go to your windows device manager, take a screenshot of your device manager and post it here please.

The unknown device is related to my laptop.Nothing happens when I connect the phone.

chris_b0ss said:
The unknown device is related to my laptop.Nothing happens when I connect the phone.
Click to expand...
Click to collapse
Ok so its not detected at all
Might be caused by
a bad usb cable --> Try another one that you are 100% sure its working
a bad usb port on the computer (use only usb 2.0 ports btw)
a problem with the computer ---> Try another computer.
a bad usb port on the phone ---> need to replace the usb/front mic board
Might also worth to fix your laptop drivers problem. Might be causing problem if the "unknown" device is an adapter or usb controller...
Then reboot the computer.

I think we can exclude the first two,because I've tried 2 different USB cables,and with my S2 ,both of them are working,even ADB.I will try to replace the usb port from the phone,and then try again.But,do you think it will work ?
Thank you!

chris_b0ss said:
I think we can exclude the first two,because I've tried 2 different USB cables,and with my S2 ,both of them are working,even ADB.I will try to replace the usb port from the phone,and then try again.But,do you think it will work ?
Thank you!
Click to expand...
Click to collapse
Its hard to tell, there isn't any background info about what was done on that phone. The usb board is pretty cheap so it worth a try if you are 100% sure everything else is fine (computer, cables etc..)

I understand,but,I mean,as far as I know,it's not hard brick,because the phone is still booting..in some way ..so if I manage to connect it,I can flash the rom..am I right?
Sent from my GT-I9100 using XDA Free mobile app

chris_b0ss said:
I understand,but,I mean,as far as I know,it's not hard brick,because the phone is still booting..in some way ..so if I manage to connect it,I can flash the rom..am I right?
Sent from my GT-I9100 using XDA Free mobile app
Click to expand...
Click to collapse
Normally it should be pretty easy to fix if you can get fastboot and adb connectivity. You could then update the firmware so you can flash the correct RUU to restore the phone back to stock, already made the research and all the files (firmware and ruu) you'll need are available.

alray said:
Normally it should be pretty easy to fix if you can get fastboot and adb connectivity. You could then update the firmware so you can flash the correct RUU to restore the phone back to stock, already made the research and all the files (firmware and ruu) you'll need are available.
Click to expand...
Click to collapse
Sorry for the late reply,the phone is now in service,in 1-2 days they should fix the USB board,and I will get back with more info soon.
Thank you very much for your quick answers and for taking time to help me!

Good news,I've managed to unbrick it.I asked a friend with a Mac to check it out,and his Mac recognized with no problems.Installed the Os,but still,Windows can't detect it.I've tried on 2 pc's(7 and 10) with the proper drivers.Weird..
Anyway,thank you for your time @alray !

[GUIDE] [UNBRICK]LG Magna H502F Stock Rom

Your LG Magna(H502) stuck on lg logo or bootlooping follow this guide to fix your device
Requirements:
USB Cable
LG Driver
LG FlashTool
MegaLock.dll
H502F Stock ROM
Let's start
1.Install the LG Driver
2.Install LG FlashTool and don't run it yet
3.Copy MegaLock.dll and replace in the folder LG FlashTool (C:\LG\LGFlashTool)
4.Turn off your device(remove battery and put it back to be sure its off)
5.Press and Hold the Volume UP button,plug in the USB cable and hold until you see "Firmware Update" you are now in download mode
Don't plug into usb 3.0 port and try other ports if getting issues
6.Open Device Manager on your PC
Go on "Ports (COM & LPT)" if the driver is installed properly, you will see "LGE Mobile USB Serial Port (COMxx)"
We need to change the COM port number to 41
Double click on "LGE Mobile USB Serial Port"
Go to Port Settings Tab and click Advanced
Change COM Port Number to COM41 and click OK
Disconnect USB cable,wait a few seconds and reconnect or reboot back in download mode to check if the drivers are working properly
7.Open LG FlashTool as admin
Tick the Select Manual Mode box
Extract LG Magna H502F.rar
Click the DLL "....." button and select the DLL found in the extracted folder(LGH502f_20150416_LGFLASHv190.dll)
Click the S/W add button and select the file with the .tot extension(LGH502fAT-00-V10a-CIS-XX-MAR-16-2015+0.tot)
Don't touch anything else and press ok
Flashing will format the phone all data will be lost
8.Click on the Yellow Arrow Button at the top left and it will start the flashing process
When you see ready in a few seconds you will be asked to disconnect and reconnect the cable and it will start flashing
It will take some time
During the flashing process, the phone will reboot itself and will display "MiniOS Factory Reset Status".Don't worry about it
When you see pass in FlashTool and Factory Reset Status 3 on your phone means the flashing process is completed
Disconnect the cable and remove the battery
Power on your phone and enjoy your working phone again (Don't forget to disconnect USB cable else if you didn't close the FlashTool it will go back in download mode and flash again)
Fixing problems
Factory Reset Status 2 and download fail
Method 1
1.Disconnect the cable and take out the battery after some seconds insert back
2.Press and hold both the power button and the volume down and hold until LG logo appears release the buttons and immediately press and hold both buttons again to go in Factory Reset
3.Choose Yes, then Yes again, the phone will reboot
Method 2
1.In step 7 where we are setting up the FlashTool change the action mode to Board DL instead of Upgrade DL
2.When the flashing is done your phone will reboot to the AAT Screen
3. Hold down power button and press normal boot (+power) your phone will reboot. (dont forget to disconnect usb cable or close the FlashTool)

LGE Mobile USB Serial Port (COMxx) doesnt appear on my device manager..help me please??

danvelle said:
LGE Mobile USB Serial Port (COMxx) doesnt appear on my device manager..help me please??
Click to expand...
Click to collapse
Install LG Drivers from here : https://sourceforge.net/projects/avicohh/files/Android/LGUnitedMobileDriver_S51MAN313AP22_ML_WHQL_Ver_3.13.2.exe/download

danvelle said:
LGE Mobile USB Serial Port (COMxx) doesnt appear on my device manager..help me please??
Click to expand...
Click to collapse
Try installing the driver when you are in download mode or try other ports in your computer.If it still doesn't work try this driver http://oceanhost.eu/x1b0tjlhzw1z/LGUnitedMobileDriver_S51MAN313AP22_ML_WHQL_Ver_3.13.2.exe.htm

May the stock ROM work with h500f ?

Geralt1232 said:
May the stock ROM work with h500f ?
Click to expand...
Click to collapse
Nope

is this v10a? which ROM can be rooted and TWRPed?

xd
as I can install the KDZ I have the LG H502G And not catch any of that model Dll !! Help!!​

danvelle said:
LGE Mobile USB Serial Port (COMxx) doesnt appear on my device manager..help me please??
Click to expand...
Click to collapse
You have to enable "Show hidden devices"

I lost data connection often when playing games or using any app can this problem solved by installing stock rom again? Plzz tell me the solution

Trying to get rid out TWRP
If I ever flash stock firmware, does custom recovery/TWRP be removed ?

yes.it will be replaced with stock...
Sent from Valhalla

Lg magna
My lg magna is not booting.
I tried installing a custom ROM it showed that it was done but its not booting now. Its not even booting to recovery mode. I've not tried flashing the a ock ROM but will it work.will it boot in download mode?

go to view option appear on that window and click on 'show hidden devices'
danvelle said:
LGE Mobile USB Serial Port (COMxx) doesnt appear on my device manager..help me please??
Click to expand...
Click to collapse
Reply::go to view option appear on that window and click on 'show hidden devices'

Hello, I have the following problem. As in every other thing ive done to this phone (root, installing twrp, installing xposed) I always thought my model was LG-H502F. Though, my model is LG-H500F, I bought it from Greece, I recently bought Huawei P8 lite 2017 for myself and I gave my old LG to my father, he tell me that sometimes it lags and he is right. I think it lags because I uninstalled Xposed (flashed the uninstall zip using twrp) and also removed root, because he didnt need those things in his phone. The question is: Is there somewhere I can get the stock LG-H500F zip and what guide should I use? Ive been searching for a while now and can't find many topics related to LG-H500F. Thanks

Aneom7331 said:
Hello, I have the following problem. As in every other thing ive done to this phone (root, installing twrp, installing xposed) I always thought my model was LG-H502F. Though, my model is LG-H500F, I bought it from Greece, I recently bought Huawei P8 lite 2017 for myself and I gave my old LG to my father, he tell me that sometimes it lags and he is right. I think it lags because I uninstalled Xposed (flashed the uninstall zip using twrp) and also removed root, because he didnt need those things in his phone. The question is: Is there somewhere I can get the stock LG-H500F zip and what guide should I use? Ive been searching for a while now and can't find many topics related to LG-H500F. Thanks
Click to expand...
Click to collapse
https://lg-firmwares.com/lg-h500f-firmwares/
just find the country you are in.

I found this page earlier but can you import the kzd file to LG Flash tool? I didn't test this but, I guess it works. Thanks for replying

Aneom7331 said:
I found this page earlier but can you import the kzd file to LG Flash tool? I didn't test this but, I guess it works. Thanks for replying
Click to expand...
Click to collapse
yes. it will )

Hi, I'm in the same situation as Aneom7331, indeed I have a bricked LG Magna H500F and I'm trying to flashing a stock firmware. Where should I put the .kdz file in the lg flash tool 2.0.1.6? Moreover, the .kdz file has not a .dll file together with it, Thanks in advance

Someone have link to stock for h502y?

Secure booting error 1003

So I think I may have bricked my phone unless I can get the H811 20i KDZ file but even that may not be good enough to save it. I'll start with where I am currently at. On boot I get the error:
Secure booting error!
Error code: 1003
Modified
I am able to get into download mode by pressing the up volume key or into the wipe mode by pressing the down volume key. However, no matter what I try I can't seem to get it to reboot normally.
Here is what I did to get myself into this situation:
I stepped through the guide to install MM and then I performed the fastboot OEM unlock and booted into TWRP. I then installed SuperSU and rebooted. Then for reasons unknown I decided I would relock the boot loader and so I ran the command fastboot oem lock. I fully understand the stupidity of that thought now but didn't think very clearly at the time.
Here is what I have tried:
Using the LG Support Tool I attempted an Upgrade Recovery which failed.
Using the guide on here to return to stock I attempted the method using the kdz file for h811 10n but that fails at the upgrading your phone with the error message "Upgrade stopped due to an error". I have attempted the retry button numerous times without any change in responses.
At this point in time I am game to try anything.
:fingers-crossed:

Thanks to autoprime I am now downloading the kdz for MM and when it is complete I will attempt to use LGUP to restore it.
Well I get an error message from LGUP stating that I don't have the correct DLL for H81120i installed. I attempted to replace the dll with the one inside the MM kdz but that didn't work.

bbenz3 said:
Thanks to autoprime I am now downloading the kdz for MM and when it is complete I will attempt to use LGUP to restore it.
Well I get an error message from LGUP stating that I don't have the correct DLL for H81120i installed. I attempted to replace the dll with the one inside the MM kdz but that didn't work.
Click to expand...
Click to collapse
Use LGBridge. Put it in download mode. Click on update error recovery.

Vseprz said:
Use LGBridge. Put it in download mode. Click on update error recovery.
Click to expand...
Click to collapse
Oh I wish it were that simple. I had tried it last night but attempted it again as I couldn't remember what happened. I get an error message stating "Connect your mobile device to the USB port. If it is already connected, contact LG customer service."
At this point I think I may just need the MM dll to use with LGUP. I attempted to use an MSI packaging utility to replace the dll in the 0.0.3.23 installer with the dll I extracted from the kdz file but that got me nowhere.

I attempted to use the LG FlashTool v1.8 and found out that the dll that I extracted is ver 0.0.3.21 which is older than the msi version found on here. Does anyone know how to get a newer one?

bbenz3 said:
Oh I wish it were that simple. I had tried it last night but attempted it again as I couldn't remember what happened. I get an error message stating "Connect your mobile device to the USB port. If it is already connected, contact LG customer service."
At this point I think I may just need the MM dll to use with LGUP. I attempted to use an MSI packaging utility to replace the dll in the 0.0.3.23 installer with the dll I extracted from the kdz file but that got me nowhere.
Click to expand...
Click to collapse
I had the same error and sucessfully used lgbridge. You probably need to reinstall your usb drivers.

OK I'll give that a shot.
No go...
I uninstalled anything I could find related to LG. I then reinstalled the LG Bridge software which then updated the USB drivers to 4.0.4. I then rebooted my computer and attempted it again and I got nothing but the same error.

bbenz3 said:
OK I'll give that a shot.
No go...
I uninstalled anything I could find related to LG. I then reinstalled the LG Bridge software which then updated the USB drivers to 4.0.4. I then rebooted my computer and attempted it again and I got nothing but the same error.
Click to expand...
Click to collapse
I had this exact same issue when upgrading my phone. Didn't do it correctly and it took me about 3 hours before I got my phone working again. It was about a week ago on another computer, but I'll try to recall what I did when it finally clicked in my mind.
Download H81120i_00_0201.kdz flashable zip from here (1.6GB Feb-04-16):
http://downloads.codefi.re/autoprime/LG/LG_G4/H811/H81120i/
Download LGUP and install it. I used the DropBox link in this thread:
http://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803
Remember to install the LGUP_8994_DLL file BEFORE LGUP_Install
Download and install LG Bridge (for the USB drivers) here:
http://www.lg.com/uk/support/pc-suite
Select the LG 815 model, the drivers will work. I only used the LG Bridge to install the USB drivers. Nothing else.
OK, now here's where your phone comes in.
Step 1: Turn off your phone (pull the battery if you must, but put it back in).
Step 2: Hold the VOLUME UP button and plug the USB cable into your PC. This puts your phone into DOWNLOAD MODE.
Step 3: On your PC, open up LGUP. The program shoud recognize the phone as H811 in COM3 or COM4. Highlight it and click the SELECT button.
Step 4: Under the "Process" row, select UPGRADE
Step 5: Click the blank space under File Path, it will pop up a [...] [X] at the end. Click the [...].
Step 6: Select the H81120i_00_0201.kdz and click on Start. The program will push the STOCK H811 MM ROM to your phone. This will bring your phone out of Brick mode, but you will have to go through the entire rooting process again.

Donut42 said:
I had this exact same issue when upgrading my phone. Didn't do it correctly and it took me about 3 hours before I got my phone working again. It was about a week ago on another computer, but I'll try to recall what I did when it finally clicked in my mind.......
Click to expand...
Click to collapse
Woohoo!!!!!!!!!!!!!! I changed two things and I'm not certain which one it was that finally made it work but I followed your steps and installed the LGUP_DLL before the application (upon re-reading the original thread for the LGUP program I see that is the way you were supposed to do it the whole time, so much for reading comprehension) and the other was I ran it from a Win 7 VM instead of Win 10.
Big thanks to you and also to bender_007 for walking me through a bunch of stuff and recommending the VM approach.

I did the exact same thing, but I cannot get LGUP to recognize my device. Uninstalled and reinstalled drivers and all. Any other ideas?

I did the following:
Installed Windows 7 in a VM
Installed the LG Bridge software and ran in do it should update
Installed the LGUP DLL
Installed the LGUP software
Connected phone to VM
Then ran LGUP tool

bbenz3 said:
I did the following:
Installed Windows 7 in a VM
Installed the LG Bridge software and ran in do it should update
Installed the LGUP DLL
Installed the LGUP software
Connected phone to VM
Then ran LGUP tool
Click to expand...
Click to collapse
Just tried this, but still showing as unknown device. I thought that was going to work.
---------- Post added at 04:39 AM ---------- Previous post was at 04:20 AM ----------
What does the phone show up in Device Manager as when it is in download manager? Mine is showing as LGE Androidnet USB Serial Port. Is this the same for you?

hv same problem. but problem is pc can't recognize the phone for below step:
Step 3: On your PC, open up LGUP. The program shoud recognize the phone as H811 in COM3 or COM4. Highlight it and click the SELECT button.
can recognize another G4.

ilovelg4ever said:
hv same problem. but problem is pc can't recognize the phone for below step:
Step 3: On your PC, open up LGUP. The program shoud recognize the phone as H811 in COM3 or COM4. Highlight it and click the SELECT button.
can recognize another G4.
Click to expand...
Click to collapse
same... I think it might have to do with the from that was installed when I relocked the boorloader. I'm so stupid for that.
I was trying different drivers, but none have helped lgup to recognize my phone.

esteho said:
same... I think it might have to do with the from that was installed when I relocked the boorloader. I'm so stupid for that.
I was trying different drivers, but none have helped lgup to recognize my phone.
Click to expand...
Click to collapse
first of all, how can we make PC detect our G4?
actually, even w/o any drive installed in PC, the PC should detect G4 if it works normally.

Device Manager shows my device, but as "LGE AndroidNet USB Serial Port". From what I have read this may be it's bricked mode. Is there anyone with an idea on how to come back from this?

esteho said:
same... I think it might have to do with the from that was installed when I relocked the boorloader. I'm so stupid for that.
I was trying different drivers, but none have helped lgup to recognize my phone.
Click to expand...
Click to collapse
saaaaame......
model COM Ports
unknwon [com41, xTreme 3]
Can't use Send_command too.
MM relocked the boorloader was stupid.

I had this exact error yesterday. I used cdmatool to get some bands enabled so I could get AT&T LTE with an AT&T sim and T-Mobile phone. All went well, and on my way out I figured since I had done the fastboot oem unlock, I should probably relock it. BAD IDEA.
By the time I found this article I had figured that somehow I needed to reflash to a ROM with a unmodified bootloader. This article is great! Such a rare treasure - all of the links to the necessary software and a short-but-sweet guide all in one. This post saved me hours, maybe days, of searching and trial-and-error.
By the way, since I had already installed the LG device drivers (available here) it was not necessary to download and install the whole LG Bridge.
THANKS!

Many times tried to flash my H811 to 20i but always ended with blank screen...is it have to wait until 5 to 10 minutes to get the phone rebooted after flashing with LGUP? Because usually ended with blank screen and qd mode, have to revive using qfil, imei unknown, camera and google play store always closes.