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Try downgrade AT&T g3. Drivers dont install

I'm trying too downgrade to stock 444. It's said to install drivers. When I connect to my win 7 laptop it says drivers installed fine. Article I'm following says to look for com and lpt port option in device manager and expand it. If it's not there install lg drivers from their site. There is no com anything in device manager. Using the driver software from lg site says installed good but then Windows says not installed. Still no com anything.
How can I get this working? Thanks.

Did you connect device in download mode?

Don't know. All I did was connect it to the laptop. Then I hear the laptop make sound when you connect a usb device. It makes it several times and don't try to install drivers. Nothing happens.
I have also connected it and then did the install pc drivers that pops up on the phone to do. That opens the installer on laptop which tries installing drivers. Windows then says the drivers were not successfully installed.
Using the drivers from the lg web site Windows still says not installed successfully.

Anyone please?

G3 & windows 10

I updated my PC to windows 10 'from 8.1 which I had no problem)
Now my phone is not recognized. (MTP or PTP) --> LG Androidnet phone : driver unavailable
Latest LG USB drivers (from XDA) didn't hange anything.
I think that it's the same old sh*t than win7, when you don't have mediaplayer installed (MTP works once you installed mediaplayer).
I found a package for MTP on Microsoft website, but didn't change anything
Did someone have the same issue ?

This should help :
https://www.microsoft.com/en-us/download/confirmation.aspx?id=48231
i can't get the file for the moment.. I'm not sure If it will works. But It should.

yan74s said:
I updated my PC to windows 10 'from 8.1 which I had no problem)
Now my phone is not recognized. (MTP or PTP) --> LG Androidnet phone : driver unavailable
Latest LG USB drivers (from XDA) didn't hange anything.
I think that it's the same old sh*t than win7, when you don't have mediaplayer installed (MTP works once you installed mediaplayer).
I found a package for MTP on Microsoft website, but didn't change anything
Did someone have the same issue ?
Click to expand...
Click to collapse
Hi
I had the same problem. I re-installed the LG drivers for my D855 and still no luck. Then I downloaded and installed LG PC Suite, let update itself and now my G3 connect to the PC. I tried using the LG Mobile Support Tool but Windows 10 says it is incompatible. Hopefully LG will release new drivers and update the tool.
Stransky
Sent from my LG-D855 using Tapatalk

I find the way to do the job :
First : install Microsoft MTP driver
https://www.microsoft.com/en-us/download/confirmation.aspx?id=48231
Second : install LGUnitedMobileDriver_S52MAN314AP22_ML_WHQL_Ver_3.14.1.exe
http://18d5a.wpc.azureedge.net/8018D5A/tool/dn/downloader.dev?fileKey=UW00120120425
And then it works...

But if you wanna use download mode and fastboot this is what you will need to do also

yan74s said:
I find the way to do the job :
First : install Microsoft MTP driver
https://www.microsoft.com/en-us/download/confirmation.aspx?id=48231
Second : install LGUnitedMobileDriver_S52MAN314AP22_ML_WHQL_Ver_3.14.1.exe
http://18d5a.wpc.azureedge.net/8018D5A/tool/dn/downloader.dev?fileKey=UW00120120425
And then it works...
Click to expand...
Click to collapse
Didn't work for me :/

I had no problems after installing windows 7. I followed this guide for my LS990: http://forum.xda-developers.com/spr...de-how-to-restore-sprint-lg-g3-ls990-t2852042

I can confirm this method works with D855, followed what the posts and video said to install and do. Flashed back to stock ROM and rerooted worked without a drama with Win 10 64bit.
Cheers

It works well on d855 and D331. thank you

Haha!! Found a solution!
Sorry for necro-ing this thread, but even now I still have the problem (with my d852).
My solution was to go on LG's website for my specific model and install the USB driver in Software Updates -> Way2 USB.
Again, sorry for the necro, but I don't want people in the future struggling with this.

I know this is an old thread but I just had the same problem with my Lenovo T450 laptop. A few days ago it recognized my G3 LS990 but today it wouldn't. I fixed it by installing the latest USB driver from LG's web site. http://www.lg.com/us/support/software-firmware-drivers

LG Bridge "No mobile device connected"

Hello,
I just got myself a brand new LG G4 H815 and it is running Marshmallow. I want to upgrade to Nougat so I installed LG Bridge on my windows 10 PC, connected my phone with original USB cable but I get message "no mobile device connected". PC recognizes my phone and I can transfer files from and to the PC. I have LG universal mobile drivers installed and the phone is in MTP mode. Weirdly, once I switch it into charging mode, LG Bridge recognizes it but won't allow me to upgrade it since it must be in MTP mode. Can someone tell me a solution to this problem or tell me if I can update my phone in some other way? LG PC suite tells me that there's some sort of Verizon app built into my phone which will do it, but I cant find it anywhere.

This is a common problem. It is some sort if glitch with windows 10
In hardware devices window are u sure the driver doesn't appear as question mark after u connect?
Remove to device driver and let windows reinstall it automaticly when you restart windows
Try again

deltadiesel said:
This is a common problem. It is some sort if glitch with windows 10
In hardware devices window are u sure the driver doesn't appear as question mark after u connect?
Remove to device driver and let windows reinstall it automaticly when you restart windows
Try again
Click to expand...
Click to collapse
Yes, I've done it, since I had some issues with other device's drivers on win 10. It didn't help. I'll try on Win 7.

UnsuccessfulScreenRepair said:
Yes, I've done it, since I had some issues with other device's drivers on win 10. It didn't help. I'll try on Win 7.
Click to expand...
Click to collapse
Yes....windows 7 will work.
Nasty windows

Boot loop after attempted downgrade of twrp

I attempted a downgrade to an older version of twrp via twrp in recovery mode. Not sure what I did wrong. Now my LineageOS hangs at the LG logo at startup. When I try to access TWRP using recovery mode, the LG logo flashes on and off (loops). I cannot access the LineageOS to enable debugging, OEM unlock, MTP USB mode, etc...
From a Windows XP SP3 desktop:
I can manually put my D851 into Download mode and can get from Download mode to firmware update mode when connected to a Windows XP computer. The Windows XP computer sees the phone as new hardware ("LGE Android Net MTP") device when connected in Firmware Update mode. In Firmware Update mode, I cannot properly access the phone using the LG PC Suite, ADB/fastboot tools, etc...
I have tried installing various versions of the LG United USB drivers. Originally, the driver installs failed citing "Windows MTP driver" not found and advising me to install Windows Media Format Update. After learning Windows Media player contained the Windows MTP driver, I installed Win Media Player 11. Now the LG United driver install fails but without mentioning missing Windows MTP driver or Windows Media Format 11 runtime updates. I have tried installing the USB drivers using LG PC Suite but it too fails when reinstalling the driver. LG PC Suite cannot connect to my phone. . Ihave tried to install the LGMobile Support Tool (ie. LGMobile Phone Software Update Tool), but the install seems to hang.
I feel that if I could just get a computer to communicate properly with the phone while in Firmware Update mode, I should be able to restore my phone. Does anyone have any ideas on other things I might try?
Thank you

I got stuck in that same boot loop as you. There's a thread that claims that the D851 is unbrickable: https://forum.xda-developers.com/tmobile-lg-g3/help/lg-g3-d851-unbrick-qualcomm-9008-t3430221 But I was also unable to get it to work on my laptop. I think some computers may have a hard time using the drivers correctly and maybe trying another computer is your best bet.
But personally, I ended up sending mine to a J-Tag service on eBay and paying some $30 to get the thing completely reset.

Boot loop after attempted downgrade of TWRP

Originally posted in LG G3 TMobile forum, but reposting here to reach a wider audience.
-----------
I attempted a downgrade of my TMobile G3 (D851) to an older version of twrp via twrp in recovery mode. Not sure what I did wrong. Now my LineageOS hangs at the LG logo at startup. When I try to access TWRP using recovery mode, the LG logo flashes on and off (loops). I cannot access the LineageOS to enable debugging, OEM unlock, MTP USB mode, place TWRP/ROM files on phone, etc...
From a Windows XP SP3 desktop:
I can manually put my D851 into Download mode and can get from Download mode to firmware update mode when connected to a Windows XP computer. The Windows XP computer sees the phone as new hardware ("LGE Android Net MTP") device when connected in Firmware Update mode. In Firmware Update mode, I cannot properly access the phone using the LG PC Suite, ADB/fastboot tools, MTP transfer, etc...
I have tried installing various versions of the LG United USB drivers. Originally, the driver installs failed citing "Windows MTP driver" not found and advising me to install Windows Media Format Update. After learning Windows Media player contained the Windows MTP USB driver, I installed Windows Media Player 11. Now the LG United driver install fails but without mentioning missing Windows MTP driver or Windows Media Format 11 runtime updates. I have tried installing the USB drivers using LG PC Suite but it too fails when reinstalling the driver. LG PC Suite cannot connect to my phone. I have tried to install the LGMobile Support Tool (ie. LGMobile Phone Software Update Tool), but the install seems to hang.
I feel that if I could just get a computer to communicate properly with the phone while in Firmware Update mode, I should be able to restore my phone. Does anyone have any ideas on other things I might try?
Thank you