Develop Bugs

How to Flash your eXpo/IQ

WARNING: DO NOT USE WINDOWS VISTA TO FLASH YOUR PHONE. THERE IS A COMMUNICATION ISSUE WITH VISTA AND THE FLASHER. LG DECIDED NOT TO FIX THIS ISSUE. ONLY FLASH YOUR PHONE USING WINDOWS XP AND WINDOWS 7.
Windows XP​
1. Get the eXpo or IQ flasher (depending on which phone you have). Here is the link:
http://forum.xda-developers.com/showthread.php?t=647900
2. Run the flasher installer.
3. Set the install directory to "C:\Documents and Settings\All Users\Application Data" if it isn't set to that already.
4. Click install
5. Plug the usb cable into your computer.
6. Power off your eXpo/IQ. Once it is powered off slide open the keyboard and hold the space bar while plugging the usb cable into your phone's micro usb port. Emergency download mode should appear on the screen.
7. Wait a couple of seconds to allow your phone and computer to communicate with each other and then press start update on the flasher program.
Note: If you get the message "Cannot detect smartphone. Please check connection." click ok and click install usb drivers. Once the drivers are installed click start update again. You may have to restart the computer for the drivers to take effect.
8. You will then see a screen that says the rom version and "Do you want to update." Click ok. The program will start to update your phone.
Windows 7​
1. Get the eXpo or IQ flasher (depending on which phone you have). Here is the link:
http://forum.xda-developers.com/showthread.php?t=647900
2. Right click the flasher installer and click properties. Now navigate to the Compatibility tab, check Run this program in compatibility mode for, and choose Windows XP (Service Pack 3). Also check run this program as an administrator in the privilege level setting in the compatibility mode tab. Click ok to save. Now run the flasher installer.
3. Set the install directory to "C:\Users\All Users" if it isn't set to that already.
4. Click install
5. Plug the usb cable into your computer.
6. Power off your eXpo/IQ. Once it is powered off slide open the keyboard and hold the space bar while plugging the usb cable into your phone's micro usb port. Emergency download mode should appear on the screen.
7. Wait a couple of seconds to allow your phone and computer to communicate with each other and then press start update on the flasher program.
Note: If you get the message "Cannot detect smartphone. Please check connection." click ok and click install usb drivers. Once the drivers are installed click start update again. You may have to restart the computer for the drivers to take effect.
8. You will then see a screen that says the rom version and "Do you want to update." Click ok. The program will start to update your phone.

Latest version?
Thank you for cooking the LG Expo base rom for flashing. Included MS Office is not 2010 and no threaded email. Included Windows is 6.5. 5.2.2174. Looking forward to an update with Windows 6.5.3 and Office 2010. I am a fan and contributor from your LG Incite ROMs. Thanks! Rick

rparanson said:
Thank you for cooking the LG Expo base rom for flashing. Included MS Office is not 2010 and no threaded email. Included Windows is 6.5. 5.2.2174. Looking forward to an update with Windows 6.5.3 and Office 2010. I am a fan and contributor from your LG Incite ROMs. Thanks! Rick
Click to expand...
Click to collapse
You are very welcome. I've had some 6.5.3 roms out. Here is the link:
http://forum.xda-developers.com/showthread.php?t=666982

I tried to flash with the eXpo ROM, I followed the intructions, but it didn't work and I can't download the IQ flasher because of the death of download link.
Can you please reupload it?
Thanks

ilyasovich said:
I tried to flash with the eXpo ROM, I followed the intructions, but it didn't work and I can't download the IQ flasher because of the death of download link.
Can you please reupload it?
Thanks
Click to expand...
Click to collapse
As I saw in oneof your other posts you are using a GM750. This isn't even the same phone as the eXpo or IQ. You're not going to be able to flash one of these roms to your phone. There are hardware differences and software differences that prevent this.

Dark9781 said:
As I saw in oneof your other posts you are using a GM750. This isn't even the same phone as the eXpo or IQ. You're not going to be able to flash one of these roms to your phone. There are hardware differences and software differences that prevent this.
Click to expand...
Click to collapse
That means that It's impossible to flash the GM750?

ilyasovich said:
That means that It's impossible to flash the GM750?
Click to expand...
Click to collapse
It's not impossible to flash the GM750. You need a rom that was made for that phone.

Dark9781 said:
It's not impossible to flash the GM750. You need a rom that was made for that phone.
Click to expand...
Click to collapse
Yesterday I used the Layla rom found here
(www) handy-faq.de/forum/lg_gm750_layla_forum/97996-lg_gm750_layla_firmware_download.html
But i had a very big problem , when upgrading process was in 45% i had a BSoD (Blue Screen of death) and my computer restarted, and the phone is now OUT OF SERVICE, i can't run it in emergency download mode
I think that this phone was dead

ilyasovich said:
Yesterday I used the Layla rom found here
(www) handy-faq.de/forum/lg_gm750_layla_forum/97996-lg_gm750_layla_firmware_download.html
But i had a very big problem , when upgrading process was in 45% i had a BSoD (Blue Screen of death) and my computer restarted, and the phone is now OUT OF SERVICE, i can't run it in emergency download mode
I think that this phone was dead
Click to expand...
Click to collapse
When that happens it should still go into emergency download mode even though the screen might not say it. Try it again and run the update.

Dark9781 said:
When that happens it should still go into emergency download mode even though the screen might not say it. Try it again and run the update.
Click to expand...
Click to collapse
Thanks a lot for your answer, I Tried it, but in vain there is no emergency download mode, i can't also charge the battery

help with flashing
I cannot complete the flasing process im using windows 7 an cannot get pass step 7 as windows is unable to install the drivers properly. Is there a way to manual install the drivers ? The phone will go to the emergency download screen and the comp just says "driver instalation was unsuccessful ". Looking in the device manager i can see the LG USB MODEM with the ! of a failed instal. Any help would be much appreciated.
reagards
Dean

Cpt Carrot said:
I cannot complete the flasing process im using windows 7 an cannot get pass step 7 as windows is unable to install the drivers properly. Is there a way to manual install the drivers ? The phone will go to the emergency download screen and the comp just says "driver instalation was unsuccessful ". Looking in the device manager i can see the LG USB MODEM with the ! of a failed instal. Any help would be much appreciated.
reagards
Dean
Click to expand...
Click to collapse
The drivers do have their own installer, you should be able to find it in one of the sub folders of c:\users\all users\lgmobileax

thx xdapants i did find the drivers but this did not fix the issue. It seems to be a connection problem with phone and comp (a common problem it would seem) do i`ve orderd and am still waiting for a new cable and hope this is the simple fix im looking for. However, if like i suspect this still does not work can i flash from memory card ? i think this was possible with the htc kaiser (best phone ever) or if not can i flash over a bluetooth connection ?

Cpt Carrot said:
thx xdapants i did find the drivers but this did not fix the issue. It seems to be a connection problem with phone and comp (a common problem it would seem) do i`ve orderd and am still waiting for a new cable and hope this is the simple fix im looking for. However, if like i suspect this still does not work can i flash from memory card ? i think this was possible with the htc kaiser (best phone ever) or if not can i flash over a bluetooth connection ?
Click to expand...
Click to collapse
I don't believe it's possible to flash an lg phone from the memory card, at least not at this point. And as the phone needs to be in download mode, flashing over BT wouldn't be possible.
Consider trying a different USB port; ideally on the opposite side of the computer if you haven't already.
Hopefully the replacement cable will work for you. It seems to be the phone doesn't like being used as a storage device, but that shouldn't really have any bearing the download mode connection.

Im trying to flash my IQ to the latest Dragonstorm ROM and got a error with a load of Chinese characters and something about a server error. Did i miss anything? I got it to see my device and it was put into emergency download no probs. I just a bit reluctant to not wanting to brick my phone

did you extract to the correct location?

[Q] P350 fastboot bricked

So I used ROMmanager to get clockwork recovery mode. Now when my phone entered the recovery mode it just say:
"Fastboot mode started"
"udc_start()"
If i connect my USB cable to it it says --suspend--
Now i tried using KDZ_FW_UPD in Emergency mode to restore original firmware but it cant find the phone. The log is:
[R&D Test Tools Log File]
10:50:59 : Launching SW update
10:50:59 : Unpacking KDZ
10:51:14 : KDZ file extraced
10:51:17 : Files were extracted.
10:51:17 : LGMobileDL Load.
10:51:17 : Port = -1
10:51:17 : Connecting to phone
10:51:17 : PHONE WAS NOT FOUND!
10:51:19 : ===FINISHED=== ​
I tried this procedure on 2 pcs but no luck. It seems that my phone can't connect to PC with usb cable.
I installed LG Moblie United drivers and disabled the lg modem thing in device manager. I am using Windows xp Proffesional SP3.
So does anyone has any clue what I am doing wrong ? If u need more info just ask.
Maybe if I try from some linux distro it will detect my phone ? But what tools to use then ?

Use fastboot to recover the phone. Check the wiki at the Troubleshooting section.
---------- Post added at 03:31 PM ---------- Previous post was at 03:12 PM ----------
I recommend using drivers latest version. Last time I checked, United Mobile Driver was version 3.7.2 release 4.9.8.1 and Modem Link Driver was 1.0. I'm providing links for download from my personal Dropbox folder because I don't remember from which LG site I downloaded them from.

Vangoda said:
So I used ROMmanager to get clockwork recovery mode. Now when my phone entered the recovery mode it just say:
"Fastboot mode started"
"udc_start()"
If i connect my USB cable to it it says --suspend--
Now i tried using KDZ_FW_UPD in Emergency mode to restore original firmware but it cant find the phone. The log is:
[R&D Test Tools Log File]
10:50:59 : Launching SW update
10:50:59 : Unpacking KDZ
10:51:14 : KDZ file extraced
10:51:17 : Files were extracted.
10:51:17 : LGMobileDL Load.
10:51:17 : Port = -1
10:51:17 : Connecting to phone
10:51:17 : PHONE WAS NOT FOUND!
10:51:19 : ===FINISHED=== ​
I tried this procedure on 2 pcs but no luck. It seems that my phone can't connect to PC with usb cable.
I installed LG Moblie United drivers and disabled the lg modem thing in device manager. I am using Windows xp Proffesional SP3.
So does anyone has any clue what I am doing wrong ? If u need more info just ask.
Maybe if I try from some linux distro it will detect my phone ? But what tools to use then ?
Click to expand...
Click to collapse
i had the same problem few days back... (ROM Manager sucks).... ok.. so.. before connecting the phone to the PC.. remove the battery, press both the volume keys (no need to press the power button)... and connect the usb.. now the cell phone will be in emergency mode.. try launching the software with kdz updater now... it should detect it.. after its detected.. connect back the battery (without disconnecting the USb cord ofcourse)... hope this works.. good luck

Good tip, adding to wiki later...
Sent from my LG-P350 using Tapatalk 2

http://multidroid2.feed.nu/2012/03/27/how-to-unbrickflash-your-optimus-melg-p350-2/

Nothing new to what's already posted in the wiki...

response
madmanzrocks said:
i had the same problem few days back... (ROM Manager sucks).... ok.. so.. before connecting the phone to the PC.. remove the battery, press both the volume keys (no need to press the power button)... and connect the usb.. now the cell phone will be in emergency mode.. try launching the software with kdz updater now... it should detect it.. after its detected.. connect back the battery (without disconnecting the USb cord ofcourse)... hope this works.. good luck
Click to expand...
Click to collapse
Didn't I said i did that ? My PC wont recognize my phone in fastboot or emergency mode, with fastboot being stuck at udc_start() and when i connect USB it says "-- suspend --" ,
I tried this guide madmanzrocks still dont see phone.
deleted lg modem, reinstalled all usb hubs, tried 10 versions of LGunited drivers, used both official update tool and kdz nothing works(can't detect phone), and also tried from cmd.
My problem isn't how to unbrick but rather why my pc won't recognize my phone :/

So, no feedback (USB Device connected sound) when conneting the phone? I assume you have tried all ports available.... Long shot, but maybe the phone's USB connector is dead... You have some background on electronics? If so, you can follow the service manual I reposted recently at the General section to check if the connector is gone (p. 113).

dbarrera said:
So, no feedback (USB Device connected sound) when conneting the phone? I assume you have tried all ports available.... Long shot, but maybe the phone's USB connector is dead... You have some background on electronics? If so, you can follow the service manual I reposted recently at the General section to check if the connector is gone (p. 113).
Click to expand...
Click to collapse
yeah tried all ports, I¨ll try on several other pc's. no connection sound, but phone is charging. I have quite some background on electronics so ill check it out when i try this on couple others pc's. Don't want to dissaemble it quite yet and if it rly is dead repair will probably take more money then i spent to buy it(I got it 2nd hand for around 50 $). It happened before that my PC coudn't recognize some devices but never like this. I ussualy get device not recognized, malfuctioned or smthing like that .

Vangoda said:
yeah tried all ports, I¨ll try on several other pc's. no connection sound, but phone is charging. I have quite some background on electronics so ill check it out when i try this on couple others pc's. Don't want to dissaemble it quite yet and if it rly is dead repair will probably take more money then i spent to buy it(I got it 2nd hand for around 50 $). It happened before that my PC coudn't recognize some devices but never like this. I ussualy get device not recognized, malfuctioned or smthing like that .
Click to expand...
Click to collapse
as I mentioned the same problem was solved bu connecting the cell phone with the battery removed. But if even that doesnt works for you, then maybe there is a fault in your PC. Does your PC instantly recognizes USB Pendrives? And which OS are you using?

madmanzrocks said:
as I mentioned the same problem was solved bu connecting the cell phone with the battery removed. But if even that doesnt works for you, then maybe there is a fault in your PC. Does your PC instantly recognizes USB Pendrives? And which OS are you using?
Click to expand...
Click to collapse
I'm using Windows XP Proffesionall, all the other usb devices at least give a message if my PC can't recognize them. You know that yellow box that pops out saying device malfuctioned or smthing like that.

Hey, i have the same problem, and i also can' t fix it, i tried all ways, but my pc dont detect my phone... so i hope that someone will find a way how to fix it... but it' s not normal what is happening with this phone...

Don't know if it helps or you already tried it.
Start fastboot v2 and start the flash so it waiting for device.
Then plug in usb and start phone in fastboot.
That worked for me before.
Sent from my LG-P350 using xda app-developers app

powerdust said:
Don't know if it helps or you already tried it.
Start fastboot v2 and start the flash so it waiting for device.
Then plug in usb and start phone in fastboot.
That worked for me before.
Sent from my LG-P350 using xda app-developers app
Click to expand...
Click to collapse
Can you please describe step by step, how to do this? maybe it works...

nr4400 said:
Can you please describe step by step, how to do this? maybe it works...
Click to expand...
Click to collapse
I can try.
First start fastboot v2 on your computer.
Load the recoveryimage amonra or cwm5 (not cwm6)
Start flash so it say searching for device.(or something like that)
Plug in usb in computer.
Start your phone in fastboot.
Plug in usb in phone.
If that don't work you can try to instead of start phone first start it with usb cable.
Can need to unplug usb and plug it in a few times if the device say suspend.
Hope it helps.
Sent from my LG-P350 using xda app-developers app

powerdust said:
I can try.
First start fastboot v2 on your computer.
Load the recoveryimage amonra or cwm5 (not cwm6)
Start flash so it say searching for device.(or something like that)
Plug in usb in computer.
Start your phone in fastboot.
Plug in usb in phone.
If that don't work you can try to instead of start phone first start it with usb cable.
Can need to unplug usb and plug it in a few times if the device say suspend.
Hope it helps.
Sent from my LG-P350 using xda app-developers app
Click to expand...
Click to collapse
Can you please add the links to this files or the files? I would be very thanksful...

Up to this point i tried all the methods you guys told me and some i found myself. Nothing worked for me as my PC stil won't recognize my phone, I have also tried all this methods on 4 PCs(2 had windows XP Proffesional SP3 with all the updates, and 2 had Windows 7 SP1 with all the current updates installed(note that 1 version was 32-bit and other was 64-bit).
My conclusion is that the USB connector is DEAD, even thought i can still charge my phone trough it. I probably won't be trying to fix this anymore as I've found an 4th gen iPod and i'll be using that from now on.It is true that i can't make calls(at least not the standard way, you know, it doesn't support SIM cards), but i have my old dumbphone phone for that and this will be used for just about anything else.
So thanks to all of you guys that tried to help me but i fear this is unrepairable. If anyone want's this phone I'll give it to you for free so you can have some fun cracking your head to see what is wrong . I only ask that if you find a way to fix it you post it here and notify me about it(send me pm).Otherwise do whatever you with it.

I have solution
Vangoda said:
So I used ROMmanager to get clockwork recovery mode. Now when my phone entered the recovery mode it just say:
"Fastboot mode started"
"udc_start()"
If i connect my USB cable to it it says --suspend--
Now i tried using KDZ_FW_UPD in Emergency mode to restore original firmware but it cant find the phone. The log is:
[R&D Test Tools Log File]
10:50:59 : Launching SW update
10:50:59 : Unpacking KDZ
10:51:14 : KDZ file extraced
10:51:17 : Files were extracted.
10:51:17 : LGMobileDL Load.
10:51:17 : Port = -1
10:51:17 : Connecting to phone
10:51:17 : PHONE WAS NOT FOUND!
10:51:19 : ===FINISHED=== ​
I tried this procedure on 2 pcs but no luck. It seems that my phone can't connect to PC with usb cable.
I installed LG Moblie United drivers and disabled the lg modem thing in device manager. I am using Windows xp Proffesional SP3.
So does anyone has any clue what I am doing wrong ? If u need more info just ask.
Maybe if I try from some linux distro it will detect my phone ? But what tools to use then ?
Click to expand...
Click to collapse
I had the same problem
1.You must have LG P350 drivers
2.Install KDZ updater
3.Download LG P350 software (I recommend V10c)
Now I will explaine steps
1.You have to charge your battery to 100% (Just leavit on charger in fastboot mode)
2.When you connect your phone to PC hit Start,go on devices and printers and disable USB Modem (Win 7)
3.Take your phone,get the battery out,then hold vol+ and vol- at the same time and plug in USB cable
4.Then you should see cheesy color screen(emergency mode)
5.Put the battery in
6.Open KDZ updater,put Type:3GQCT PhoneMode:Emergency
7.Browse downloaded software in your PC (V10C)
8.Hit ,,Launch software update"
Then just wait max.20min and your phone reboots that is it my fried
If triangle apears on screen just get the battery out and put back in
Let me how it went,or for help on [email protected]

need help
Help pls,i have LG P350 running froyo 2.2.2,and i changed software with KDZ updater to V10c but now i cant reboot in recovery,on the screen appears ,,fastboot mode start",i think i lost recovery image but i dont know hov to install it again on froyo 2.2.2

Masimo x said:
Help pls,i have LG P350 running froyo 2.2.2,and i changed software with KDZ updater to V10c but now i cant reboot in recovery,on the screen appears ,,fastboot mode start",i think i lost recovery image but i dont know hov to install it again on froyo 2.2.2
Click to expand...
Click to collapse
Read the wiki... RTFM!
Sent from my MB525 using Tapatalk 2

[Q] [SOLVED] Cannot use the LG FlashTool

Hey, I'm having issues using the FlashTool after managing to softbrick my device with an uninstall app. Basically, I installed an uninstall app, removed some bloatware and on reboot I'm stuck in bootloop hell, never getting past the LG logo.
Okay, fast forward a couple of hours, downloaded the drivers, installed them and changed the port to COM41, installed the FlashTool on my Win8 laptop, downloaded the tot-file and the correct dll (D855). Fired up FlashTool, got the phone into download mode and the files verified fine in FlashTool, unplugged the device, then replugged it, download starts, but then fails with message "Can't change to download mode".
Any ideas of what could be wrong?

serazaziel said:
Hey, I'm having issues using the FlashTool after managing to softbrick my device with an uninstall app. Basically, I installed an uninstall app, removed some bloatware and on reboot I'm stuck in bootloop hell, never getting past the LG logo.
Okay, fast forward a couple of hours, downloaded the drivers, installed them and changed the port to COM41, installed the FlashTool on my Win8 laptop, downloaded the tot-file and the correct dll (D855). Fired up FlashTool, got the phone into download mode and the files verified fine in FlashTool, unplugged the device, then replugged it, download starts, but then fails with message "Can't change to download mode".
Any ideas of what could be wrong?
Click to expand...
Click to collapse
Okay solved it by moving the Cable to a port on the dock instead of the port on the machine. Both ports are USB 2 though.

serazaziel said:
Okay solved it by moving the Cable to a port on the dock instead of the port on the machine. Both ports are USB 2 though.
Click to expand...
Click to collapse
Yeah, those USB docks always cause a lot of trouble. It is always reccomended to plug it in a port directly onto your motherboard or atleast the actual PC case.

Bingo!
Same issue, the USB port in the front of the case wouldn't work but one directly to the motherboard on the back did! Watching it download now! Woot! :good:

HELP LG G4 Bootloop issue

Recently after trying to upgrade my LG G4 to android 6.0 by flashing the zips in recovery, I encountered a boot loop. I have tried many thing like using the LG Flash Tool, I also tried booting into recovery and restoring a backup I made, but none of this made any difference. Please I need help.
LG G4 H815 android 5.1.1 or 6.0 (not sure) I'm not sure because I tried to flash the zips fro android 6.0 via recovery and didn't work, then I restored my phone and tried to boot up but that failed to work as well.

Try to use the LG bridge tool.
Start lg bridge.
Connect your device while off with your usb cable.
It will start - nevermind, just keep it going.
Use the "solve update issue" option in the bottom right corner of the software update screen in lg bridge.
It will reinstall 6.0 without data loss.

TheReino said:
Try to use the LG bridge tool.
Start lg bridge.
Connect your device while off with your usb cable.
It will start - nevermind, just keep it going.
Use the "solve update issue" option in the bottom right corner of the software update screen in lg bridge.
It will reinstall 6.0 without data loss.
Click to expand...
Click to collapse
It does not detect that the device is connected, even when it is.

Takes some time to detect. Worked for me an hour ago...

TheReino said:
Takes some time to detect. Worked for me an hour ago...
Click to expand...
Click to collapse
I might have fixed it using a different method.

Wich method?

I have the same issue.. I send my phone to the repair center of amazon. Let´s look what they can do.

Not necessary, in bootloop, just connect usb and start lgup, when it detect it, (and it will as unknown mode device) tap com port it was found on and ui will open, then click on phone info, it will connect and establish a valid usb connection to phone and open new prompt with phone info...... Then start adb command prompt and enter 'adb reboot recovery' and bingo you're in recovery.... Solves every bootloop!

spoonymoon said:
Not necessary, in bootloop, just connect usb and start lgup, when it detect it, (and it will as unknown mode device) tap com port it was found on and ui will open, then click on phone info, it will connect and establish a valid usb connection to phone and open new prompt with phone info...... Then start adb command prompt and enter 'adb reboot recovery' and bingo you're in recovery.... Solves every bootloop!
Click to expand...
Click to collapse
If the phone in bootloop, such phone does not see any one program
This phone can be started only in the DM

spoonymoon said:
Not necessary, in bootloop, just connect usb and start lgup, when it detect it, (and it will as unknown mode device) tap com port it was found on and ui will open, then click on phone info, it will connect and establish a valid usb connection to phone and open new prompt with phone info...... Then start adb command prompt and enter 'adb reboot recovery' and bingo you're in recovery.... Solves every bootloop!
Click to expand...
Click to collapse
How do you mean ?
tap com port it was found on
Click to expand...
Click to collapse

LG G4 after flashing it went dead.

Hello, Friends, I wanted to unlock an LG G4 T-mobile for a customer with "Device unlock app"
after the flashing using LG Tools from z3x the phone now is a dead black screen. When I plugged into the computer I can hear the sounds it's connected but nothing is showing. Need help to turn it back on thanks. I can't even load in Download mode.
Thanks for any help.

umarmansare said:
Hello, Friends, I wanted to unlock an LG G4 T-mobile for a customer with "Device unlock app"
after the flashing using LG Tools from z3x the phone now is a dead black screen. When I plugged into the computer I can hear the sounds it's connected but nothing is showing. Need help to turn it back on thanks. I can't even load in Download mode.
Thanks for any help.
Click to expand...
Click to collapse
Can you boot to recovery? Should be the power + volume down combo until the logo comes up.
Alternatively,
Have you installed ADB and fastboot drivers?
Can ADB see your device when you're plugged into the computer? Perhaps you can get into bootloader mode through ADB if so.
Connect LG G4 to your computer.
On the PC, access the Android SDK folder (download it if you don't have it).
There, open a command prompt window by pressing shift + right click on any blank area.
In the CMD window, execute the command " adb reboot bootloader " without quotes. If you haven't enabled USB debugging, you may be out of luck.

Tried but not working
Hello, Friend Thank you very much for your time and efforts while typing this to help me out. I did but still doesn't recognize took the owner. Technically the phone is dead.

umarmansare said:
Hello, Friend Thank you very much for your time and efforts while typing this to help me out. I did but still doesn't recognize took the owner. Technically the phone is dead.
Click to expand...
Click to collapse
why you use flash tools.? you should ut use LGUP and KDZ file.
what is this app customer with "Device unlock app"
unlock what.??

umarmansare said:
Hello, Friends, I wanted to unlock an LG G4 T-mobile for a customer with "Device unlock app"
after the flashing using LG Tools from z3x the phone now is a dead black screen. When I plugged into the computer I can hear the sounds it's connected but nothing is showing. Need help to turn it back on thanks. I can't even load in Download mode.
Thanks for any help.
Click to expand...
Click to collapse
1. Point us to that dubious unlock app please!
2. Very very often an issue occurs because a user do not use the correct commands or important error messages are thrown and the user do not show. So please write EXACTLY what you do. For example the exact command to proof the connection (e.g. "adb devices") and the exact result. easiest and best way is to just make a screenshot of anything.
3. Another example is how to you try to get into download mode? There are some guides which do not work so explain what you do always helps others to help you.
I use the following method:
Pull out battery
Plugin USB cable connected to the pc
Press vol Up and keep pressed while putting battery back in place
4. To avoid driver issues you should consider to use FWUL ( https://tinyurl.com/FWULatXDA ) for anything else then kdz flashing (this requires windows)
.
Sent from my LG-H815 using XDA Labs

steadfasterX said:
1. Point us to that dubious unlock app please!
2. Very very often an issue occurs because a user do not use the correct commands or important error messages are thrown and the user do not show. So please write EXACTLY what you do. For example the exact command to proof the connection (e.g. "adb devices") and the exact result. easiest and best way is to just make a screenshot of anything.
3. Another example is how to you try to get into download mode? There are some guides which do not work so explain what you do always helps others to help you.
I use the following method:
Pull out battery
Plugin USB cable connected to the pc
Press vol Up and keep pressed while putting battery back in place
4. To avoid driver issues you should consider to use FWUL ( https://tinyurl.com/FWULatXDA ) for anything else then kdz flashing (this requires windows)
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Sent from my LG-H815 using XDA Labs
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Hi, Thank you very much for taking your time and energy to answer me. I used Z3x to Factory the LG G4 (T-Mobile) I wanted to flash it by downgrading before to see if it could work. this is how I break the phone with the downgrading. So now the phone is not recognizing by the computer as Modem when I plugged in, I see it only as External Drive.

umarmansare said:
Hi, Thank you very much for taking your time and energy to answer me. I used Z3x to Factory the LG G4 (T-Mobile) I wanted to flash it by downgrading before to see if it could work. this is how I break the phone with the downgrading. So now the phone is not recognizing by the computer as Modem when I plugged in, I see it only as External Drive.
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you cannot downgrade h811 it has antirollback. and in autoprime 20i thread says it bricks phone.. if it was on MM and flashed lower antirollback.
what is Z3x.???