Develop Bugs

[How to fix] Windows 8/8.1/10 is not detecting my LG Gxxx device

Does this sound familiar?
Since updating to an Android Lollipop rom, my Windows PC / Laptop no longer detecting my device
Click to expand...
Click to collapse
This seems to work for most any device changing Android OS on their device
Disconnect your device from your PC/Laptop.
1
From your Device, disable USB Debugging found in Settings > Developer Options.
1
From your PC/Laptop go to Device Manager, click on View> Show Hidden Devices.
1
Double click Composite ADB Interface, click on Properties.
1
Click on the Driver tab and choose on Roll Back Driver. This will uninstall the problematic drivers.
Should 'Roll Back Driver' option be grayed out, click Uninstall.
1
In the confirmation pop up window, click the box marked "Delete the driver software for this device" and then click OK.
Repeat this step for all Composite ADB Interface' entries.
1
Shut down your PC/Laptop, then start again.
(IMPORTANT: Do not "Restart" from the shutdown menu, you must do a full shut down)
1
Once PC has fully rebooted, open device manager and keep it to the side.
1
Connect the device to your PC/Laptop. Your PC will recognize the device as a storage device.
1
From your device go back to Developer options and select USB Debugging.
1
Unplug the device, wait 15-20 seconds and reconnect. You should now see your device from you PC and Device Manager should now have a "Portable Devices" folder
1
Should 'Composite ADB Interface' show up again, repeat (4) and (5) to roll back the driver update.
Ƹ̵̡- It seems, using the universal driver is also a good suggestion. These can be downloaded here -Ʒ
LGUnitedMobileDriver Version 3.11
[URL="https://dl.dropboxusercontent.com/u/31151290/LGMobileDriver_WHQL_Ver_4.0.3.exe"]Newest version 4.03[/URL]​

try to reinstall your OS.
always works.

In my device manager there is no ACER.... When I connect my LG G3 (F400S) Android 4.4.2 version, nothing happens in the PC, nothing happens in the device manager (no refresh, no new drivers of LG or LGE), the phone just charges (nothing from the notifications as well). I have installed the LG drivers (latest from LG website), LG PC Suite, tried to connect from LG PC Suite, but the PC refuse to detect the phone. I tried with different USB cables, different USB ports and different PC with different windows (7, 8.1 and 10), absolutely nothing. More surprisingly, my friend has the LG G3 (D855) which he can connect and get detected by his laptop but mine does not in this laptop with his cable in the same USB port! I think the problem is with the phone itself even if it charges. Please HELP!!

@Mr Rus
Is this device new or did you purchase used?
Does the device charge? If so, how?
Has your LG G3 ever been connected to your PC/Laptop?
Do you hear any sound from your PC, when you connect the device via USB cable?

Hi,
1. The device was bought as used online. It said new on the website but by the look of it i know it is used (scratch at laser autofocus and screen not properly glued OR it is a defective one).
2. Yes it does charge with the charger. The one i got charged the phone 0 to 100 in 4 hours. So i use my tablet charger (5V, 2A) to charge the phone with another cable (about 2h and 15min from 0 to 100) as the cable which came with the phone also causes the slow charging. When connected to the PC the phone vibrates and charges. I can see the 'electric current' on the battery icon and on the lock screen I can see it says charging (%).
3. It is the first time i've connected the phone with my different PCs. First one i tried without the drivers installed then tried with driver and pc suite installed. In the second PC the driver was installed first then the phone was connected. No positive result.
4. No, no sound at all. But i remember that there was some android adb stuff in the device manager (maybe same to the ACER...), i uninstalled it without checking the box mentioned in your instructions unfortunately. Then i heard a sound when connecting the phone. And right after that another sound, in my taskbar it says unknown device and error (i forgot the error code). But nothing on my phone in the notifications, it just charges. Under USB controllers in my pc i could see Unknown usb composite device (something like that) with yellow exclamation mark. I googled and had this uninstalled. Since then no sound at all.
I cannot return the phone for exchange as the shipping cost would be too much for me to afford (about USD 70-90). I am waiting for a software update as maybe this will solve the problems. I am still with kit kat 4.4.2. But if this is a hardware issue, it would be difficult to solve this.
Also the USB OTG does not work.

Mr Rus said:
Hi,
1. The device was bought as used online. It said new on the website but by the look of it i know it is used (scratch at laser autofocus and screen not properly glued OR it is a defective one).
2. Yes it does charge with the charger. The one i got charged the phone 0 to 100 in 4 hours. So i use my tablet charger (5V, 2A) to charge the phone with another cable (about 2h and 15min from 0 to 100) as the cable which came with the phone also causes the slow charging. When connected to the PC the phone vibrates and charges. I can see the 'electric current' on the battery icon and on the lock screen I can see it says charging (%).
3. It is the first time i've connected the phone with my different PCs. First one i tried without the drivers installed then tried with driver and pc suite installed. In the second PC the driver was installed first then the phone was connected. No positive result.
4. No, no sound at all. But i remember that there was some android adb stuff in the device manager (maybe same to the ACER...), i uninstalled it without checking the box mentioned in your instructions unfortunately. Then i heard a sound when connecting the phone. And right after that another sound, in my taskbar it says unknown device and error (i forgot the error code). But nothing on my phone in the notifications, it just charges. Under USB controllers in my pc i could see Unknown usb composite device (something like that) with yellow exclamation mark. I googled and had this uninstalled. Since then no sound at all.
I cannot return the phone for exchange as the shipping cost would be too much for me to afford (about USD 70-90). I am waiting for a software update as maybe this will solve the problems. I am still with kit kat 4.4.2. But if this is a hardware issue, it would be difficult to solve this.
Also the USB OTG does not work.
Click to expand...
Click to collapse
I have the same problem...

Maybe you have some problems with usb
Maybe you have some problems with usb port. I use usb hubs in such situations. Somehow, gadget seamlessly connects to a PC via the the extraneous device. I found good reviews for usb hubs on topchoice.best, if you suddenly decide to take my advice.

Go to settings
Then PC Connection
Check to see if phone is set to MTP
Sent from my VS985 4G using XDA Free mobile app

xenevo said:
Go to settings
Then PC Connection
Check to see if phone is set to MTP
Sent from my VS985 4G using XDA Free mobile app
Click to expand...
Click to collapse
There is no PC connection setting, no MTP settings as well.

I am on a stock based rom.
If you are using aosp or cm based you might find the mtp in storage settings.
If the previous owner defaults the connection to charge only then windows will not detect the phone.
A friend of mine did the same and i found the setting to reset back to a mtp connection when plugged in with usb.
If i remember i had to hit the ellipsis button ... The three dots and it was in there. Sorry i am vague but it was a long time ago and i am stock based.
If somebody running aosp or cm can chime in and tell him where exactly that setting is that would be nice.
Otherwise goggle it.
Good luck my friend!
Sent from my VS985 4G using XDA Free mobile app

xenevo said:
I am on a stock based rom.
If you are using aosp or cm based you might find the mtp in storage settings.
If the previous owner defaults the connection to charge only then windows will not detect the phone.
A friend of mine did the same and i found the setting to reset back to a mtp connection when plugged in with usb.
If i remember i had to hit the ellipsis button ... The three dots and it was in there. Sorry i am vague but it was a long time ago and i am stock based.
If somebody running aosp or cm can chime in and tell him where exactly that setting is that would be nice.
Otherwise goggle it.
Good luck my friend!
Sent from my VS985 4G using XDA Free mobile app
Click to expand...
Click to collapse
Unfortunately there is no such setting. I am using the stock ROM from LG itself (android 4.4.2) and the only setting about PC connectivity is Share & connect --> LG PC Suite. There is not options for MTP even after connecting the phone. I know for my friend when he connect his, he get the notification to change to charge only, MTP etc from the notification bar, but mine nothing. I done factory reset so, I do not think that the default setting is still set to charge only. Tried everything for this issue :/

For a last resort you can try another usb cable and/or a different usb port. There are also apps on the play store that will do wifi direct.
Sent from my VS985 4G using XDA Free mobile app

Thanks bro. Good job.

@TonyStark, thanks for the job you have done, for us, but my friend's AT&T LG G3 does not connect to PC at all, i have tried many ways like 3845#*850# Post Setting > Diag Settings > USB Set for Diag && Settings > Diag Settings > USB Set for Diag, but still no luck, i have also installed LGUnitedMobileDriver which was also suggested by you on the first post, No Luck yet,
Edited: In the last i came to know that the USB jack or port of the G3 was badly damaged, hence, after knowing that i told my friend that he is luck because his devices is still charging with this port condition. And he went to the hardware shop happily
And you were pleased to shut down that thread, I don't know why? may be you were trying or looking to make something better than that but we lost a good hope.
Now please help me what can i do with it, it is running 4.4.2, any thing we want to do with it is failed due to no USB connection to the PC,
by the way, i know i can root it with kingoroot and install autoRec and than TWRP and can upgrade to Lollipop by the way of putting all material into SDCard but does updating solves the USB connection problem OR we will be in the same state. As far as Marshmallow is also landing soon so, I think my friend must not stay on kitkat, and lastly an LG G3 like wooping device may not live its all life without USB connection. Please help. Thanks

in device manager i cant find adb interface so i cant proceed

w1040 said:
in device manager i cant find adb interface so i cant proceed
Click to expand...
Click to collapse
I have this same problem. There is no Composite ADB Device in manager. I can't seem to find anything to give me any help. Can someone help us???

gonehaywire said:
I have this same problem. There is no Composite ADB Device in manager. I can't seem to find anything to give me any help. Can someone help us???
Click to expand...
Click to collapse
I have this same problem

how
you can use last version lg mobile driver

You can access the PC connection from your phone setting/storage/upper right corner option/USB PC Connection.
Then you will have 3 options of Charge tablet, Media sync (MTP), Send images (PTP)
Unfortunately even after I select MTP, my PC still can't detect my tablet LG G Pad 7.0 LTE

hi, thanks for sharing this info (new member here)

*Solved* LG G3 No longer connects to PC via MTP/PTP - Only Charge-only

Hi Guys,
A weird one here for you, I'm already contemplating throwing my phone at a wall that's how long I've been trying to fix it.
I have a LG G3 D855 Gold 32gb model purchased via Kogan in Australia.
The unit is now on Android 5.0 (no updates available for 5.1+) - Software Version V20i-SEA-XX with Build number LRX21R.A1440645925.
This phone is non-rooted with stock ROM etc.
So the issue at hand, I upgraded my Win7 PC via the upgrade option to Win10 to retain my games/files etc.
Now when connecting the phone to the PC it only goes to charging mode and I am unable to click on it within the drop-down to change it to anything else.
I have tried LG G3 drivers, Googles generic drivers, ADB suite drivers. I am unable to adb find the phone, I do not have an Acer Composite device in Device Manager.
Win 10 keeps saying the device is not recognised/malfunctioned.
Tried different cords, double checked the connector on the phone for any dust specs etc.
My PC refuses to work with any driver I have thrown at it, however in each scenario with various drivers, warnings still persist in Device Manager.
Some of the drivers force the phone to connect/reconnect and cause the "ping" sound each time it disconnects and reconnects (with malfunction warning prompts).
This is on Win10 with 64bit Home edition.
I am at my wits end and can't think of anything I haven't tried beyond a factory reset of my phone (hoping not to at this stage as I'm thinking it's driver-related).
It won't let me tether or anything via USB also, same goes with USB debugging, no change.
Lastly which may also help narrow it down, with the phone plugged in BEFORE it gets to the OS, I can change between PTP/MTP and USB charge, however once the Win10 OS loads up, it disconnects/malfunctions and lists Charge Only.
And yes, this phone can connect on my Win7 small PC which I use for testing crap out on.
Any ideas guys?
Let me know if any log files or anything is required.
At this stage I am unable to do a root to the phone (due to adb issues etc) nor can I connect to the internal phone system unless I use in the in-built file explorer.
Edit: *SOLVED*
Ok so turns out the issue is, and this is just my case, my motherboard has various utilities, one of which is a USB 3.0 boost option.
When I did an upgrade to Windows 10, it somehow screwed up various programs on my PC including registry etc.
I reinstalled the particular utility (I was actually trying to fix my graphics clock etc so happy coincidence) which also re-installs the USB 3.0 Boost software which in turn has fixed my USB Ports.
So if you have a custom built PC (my Motherboard being a Rampage 4 Formula). Check the Mobo Utilities/Drivers for any conflicts.

I have the exact same problem, and I can't seem to find a solution for months now. It's really annoying and depressing

nicholsonr said:
Hi Guys,
A weird one here for you, I'm already contemplating throwing my phone at a wall that's how long I've been trying to fix it.
I have a LG G3 D855 Gold 32gb model purchased via Kogan in Australia.
The unit is now on Android 5.0 (no updates available for 5.1+) - Software Version V20i-SEA-XX with Build number LRX21R.A1440645925.
This phone is non-rooted with stock ROM etc.
So the issue at hand, I upgraded my Win7 PC via the upgrade option to Win10 to retain my games/files etc.
Now when connecting the phone to the PC it only goes to charging mode and I am unable to click on it within the drop-down to change it to anything else.
I have tried LG G3 drivers, Googles generic drivers, ADB suite drivers. I am unable to adb find the phone, I do not have an Acer Composite device in Device Manager.
Win 10 keeps saying the device is not recognised/malfunctioned.
Tried different cords, double checked the connector on the phone for any dust specs etc.
My PC refuses to work with any driver I have thrown at it, however in each scenario with various drivers, warnings still persist in Device Manager.
Some of the drivers force the phone to connect/reconnect and cause the "ping" sound each time it disconnects and reconnects (with malfunction warning prompts).
This is on Win10 with 64bit Home edition.
I am at my wits end and can't think of anything I haven't tried beyond a factory reset of my phone (hoping not to at this stage as I'm thinking it's driver-related).
It won't let me tether or anything via USB also, same goes with USB debugging, no change.
Lastly which may also help narrow it down, with the phone plugged in BEFORE it gets to the OS, I can change between PTP/MTP and USB charge, however once the Win10 OS loads up, it disconnects/malfunctions and lists Charge Only.
And yes, this phone can connect on my Win7 small PC which I use for testing crap out on.
Any ideas guys?
Let me know if any log files or anything is required.
At this stage I am unable to do a root to the phone (due to adb issues etc) nor can I connect to the internal phone system unless I use in the in-built file explorer.
Click to expand...
Click to collapse
Try the drivers from this site
http://forum.xda-developers.com/showthread.php?t=2785089

ludoke said:
Try the drivers from this site
http://forum.xda-developers.com/showthread.php?t=2785089
Click to expand...
Click to collapse
Using the drivers on that page you have advised gives the following.
Device Manager shows a Warning on it in USB controllers as "LGE Mobile USB Composite Device". It automatically "malfunctions" according to Windows 10 and I can't change the connection interface on the phone.
Going into the properties on that device in Device Manager lists the following;
This device cannot start. (Code 10)
A device which does not exist was specified.

http://forum.xda-developers.com/lg-g3/help/answer-windows-8-8-1-detecting-lollipop-t2967574
This also works for win 10
If u find this helpful rember the thanks button

TheMadScientist420 said:
http://forum.xda-developers.com/lg-g3/help/answer-windows-8-8-1-detecting-lollipop-t2967574
This also works for win 10
If u find this helpful rember the thanks button
Click to expand...
Click to collapse
This didn't work. Already tried

Fixed my problem
I've had the same issue with my LG G3 in being unable to connect the device to my laptop. I'm not sure if the cause was a phone software update or the upgrade from Windows 8.1 to Windows 10. Either way, I searched and fixed it tonight by installing updated drivers. Hope this helps others as well.
Hmmm, I cannot post the link! technobuzz dot net lg g3 drivers
To prevent spam on the XDA forums, ALL new users prevented from posting outside links in their messages. After approximately 10 posts, you will be able to post outside links. Thank you for understanding!

LG G3 (F400S): No sound, no USB OTG and it is not recognized by my laptop

Hi everyone, I bought an LG G3 Korean version (F400S) unlocked recently. It is a good phone but I am experiencing three annoying issues (out of the box) with the phone and they are:
1. NO sound at all from the back loudspeaker. The volume is set to maximum, there is no sound from music, video, notifications, touch sound effects, or even ringtone! Surprisingly, when I connect my earphones, there is sound in my earphone, when I remove the earphone, absolutely NO SOUND from the loudspeaker. The sound from ear speaker (the one used to make call) works. I have tested the ringtone in the Hidden Menu, when the ringtone is being played, there is no sound at all.
2. The LG G3 charges well when connected with the charger and when connected with my laptop as well. However, whenever I connect the LG G3 to my laptop, it only charges, it is NOT RECOGNIZED by my laptop. I have the LG Mobile driver installed (downloaded from the LG website (Korea website)), the LG PC Suite installed, the LG Mobile Phone Support Tool installed. Whatever I do, changes the USB cable/ USB port, try in different windows version (Windows 7, 8.1 and 10), USB debugging on and off, reinstall driver, reinstall driver from the option in LG PC Suite, restart the PC several times, NOTHING happens. It is not recognized at all in my laptop. ALSO I cannot see any thing related to LG driver in the Device Manager.
3. USB OTG does not work. I have tried with a working OTG cable to connect a pendrive in my LG G3, it is not recognized, even in the File Explorer of the phone. The cable and pendrive is however detected in my other android device.
The Android version of my LG G3 is Android 4.4.2 (I have received only one update for improving Google experience (about 10 MB).
The Kernel version is 3.4.0
The build number is KVT49L.F400S11a
Software version is F400S11a
Please help me, I have googled for the problems, searched in Youtube as well but no solutions. The phone was bought online, it is original but I have no warranty and even if i need to repair, I will have to send it back to China, which will be money and time consuming. Please help me.

Upgrade to v20F using this KDZ and let me know if it resolves your issues or not
http://pkg02.xcdn.gdms.lge.com/dn/downloader.dev?fileKey=FW3D4U9E02LPATRAC381YA4/F400S20F_00.kdz

itsbighead said:
Upgrade to v20F using this KDZ and let me know if it resolves your issues or not
Click to expand...
Click to collapse
Thanks for the reply, I tried your suggestion, but it did not work. Again, when I tried to connect the LG G3 to the PC so as to flash with the KDZ, it says on the taskbar: 'The last USB device you connected to this computer malfunctioned, and Windows does not recognize it'. In the Device Manager, I get USB Device Not Recognized (Error Code 43), Unknown USB device (Device Descriptor Request Failed) Error Code 43. I googled this issue as well no success, I reinstalled the LG Drivers, rebooted my PC, again NO LG DRIVERS in the Device Manager, and whenever I connect the LG G3 I get the same message I mentioned above. Hence, I cannot upgrade to the v20F version as I cannot connect the device to my PC.
UPDATE: I cannot put the device in download mode for flashing. I hold the volume up button while connecting the cable to the USB 2.0 port. The LG logo appears on the phone and it just charges. Also, I have tried to remove everything related to the drivers and reinstall, now I do not have the Error Code 43, BUT still the phone is not recognized.

Mr Rus said:
Thanks for the reply, I tried your suggestion, but it did not work. Again, when I tried to connect the LG G3 to the PC so as to flash with the KDZ, it says on the taskbar: 'The last USB device you connected to this computer malfunctioned, and Windows does not recognize it'. In the Device Manager, I get USB Device Not Recognized (Error Code 43), Unknown USB device (Device Descriptor Request Failed) Error Code 43. I googled this issue as well no success, I reinstalled the LG Drivers, rebooted my PC, again NO LG DRIVERS in the Device Manager, and whenever I connect the LG G3 I get the same message I mentioned above. Hence, I cannot upgrade to the v20F version as I cannot connect the device to my PC.
UPDATE: I cannot put the device in download mode for flashing. I hold the volume up button while connecting the cable to the USB 2.0 port. The LG logo appears on the phone and it just charges. Also, I have tried to remove everything related to the drivers and reinstall, now I do not have the Error Code 43, BUT still the phone is not recognized.
Click to expand...
Click to collapse
Pull the battery
Only press the volume up button while connecting the cable to the USB port.
Let me know if that works. It sounds like your pressing the power button first, pressing volume up and then plugging the usb cable in
If it doesnt theres also the adb method as well that i can tell you after

itsbighead said:
Pull the battery
Only press the volume up button while connecting the cable to the USB port.
Let me know if that works. It sounds like your pressing the power button first, pressing volume up and then plugging the usb cable in
If it doesnt theres also the adb method as well that i can tell you after
Click to expand...
Click to collapse
I tried it but I only get a picture of a battery with a USB cable connected and a yellow triangle with an question mark. No download mode, and it is not detected by my PC. Please give me further suggestions. I am continuously searching how to solve these issues.

Mr Rus said:
I tried it but I only get a picture of a battery with a USB cable connected and a yellow triangle with an question mark. No download mode, and it is not detected by my PC. Please give me further suggestions. I am continuously searching how to solve these issues.
Click to expand...
Click to collapse
you can use this command with adb
adb reboot bootloader

Mr Rus said:
Hi everyone, I bought an LG G3 Korean version (F400S) unlocked recently. It is a good phone but I am experiencing three annoying issues (out of the box) with the phone and they are:
1. NO sound at all from the back loudspeaker. The volume is set to maximum, there is no sound from music, video, notifications, touch sound effects, or even ringtone! Surprisingly, when I connect my earphones, there is sound in my earphone, when I remove the earphone, absolutely NO SOUND from the loudspeaker. The sound from ear speaker (the one used to make call) works. I have tested the ringtone in the Hidden Menu, when the ringtone is being played, there is no sound at all.
2. The LG G3 charges well when connected with the charger and when connected with my laptop as well. However, whenever I connect the LG G3 to my laptop, it only charges, it is NOT RECOGNIZED by my laptop. I have the LG Mobile driver installed (downloaded from the LG website (Korea website)), the LG PC Suite installed, the LG Mobile Phone Support Tool installed. Whatever I do, changes the USB cable/ USB port, try in different windows version (Windows 7, 8.1 and 10), USB debugging on and off, reinstall driver, reinstall driver from the option in LG PC Suite, restart the PC several times, NOTHING happens. It is not recognized at all in my laptop. ALSO I cannot see any thing related to LG driver in the Device Manager.
3. USB OTG does not work. I have tried with a working OTG cable to connect a pendrive in my LG G3, it is not recognized, even in the File Explorer of the phone. The cable and pendrive is however detected in my other android device.
The Android version of my LG G3 is Android 4.4.2 (I have received only one update for improving Google experience (about 10 MB).
The Kernel version is 3.4.0
The build number is KVT49L.F400S11a
Software version is F400S11a
Please help me, I have googled for the problems, searched in Youtube as well but no solutions. The phone was bought online, it is original but I have no warranty and even if i need to repair, I will have to send it back to China, which will be money and time consuming. Please help me.
Click to expand...
Click to collapse
First update your drivers on your computer. If that won't work try different ports. USB 2.0 or 3.0 can make a huge difference. Your speaker is probably dead. And i don't have any experience with USB OTG so I can't help you with that

itsbighead said:
you can use this command with adb
adb reboot bootloader
Click to expand...
Click to collapse
Already tried that with the '15-sec ADB' something like that + with Android studio, I have searched on youtube and google how to do it, but nothing happen when I enter the command, it just says that device not found. Whenever I connect a pendrive or my other phones to my PC, I can see in device manager, it refreshes and the driver for that particular device appears. BUT there is NO refresh nor any driver appearing when connecting the LG G3. Today I tried it with my friend's USB cable (he has the LG G3 (D855), it does not detect as well in his PC but his phone is detected in his PC. I really do not know what is the matter :crying:

_SDroid said:
First update your drivers on your computer. If that won't work try different ports. USB 2.0 or 3.0 can make a huge difference. Your speaker is probably dead. And i don't have any experience with USB OTG so I can't help you with that
Click to expand...
Click to collapse
Thank you for your reply, I have already tried all of these, nothing is working.

Did you figure out how to get your phone recognized by the computer? I am facing the very same issue and I'm feeling hopeless

Nttra said:
Did you figure out how to get your phone recognized by the computer? I am facing the very same issue and I'm feeling hopeless
Click to expand...
Click to collapse
No, i am still having the same issue. I think with an update it will be okay (but I have not received any update till now! I am stuck with Kitkat 4.4.2). If it is a hardware problem I will have to return it or replace the USB port or motherboard.

Mr Rus said:
No, i am still having the same issue. I think with an update it will be okay (but I have not received any update till now! I am stuck with Kitkat 4.4.2). If it is a hardware problem I will have to return it or replace the USB port or motherboard.
Click to expand...
Click to collapse
Oh, OK thanks. I'm still reading forums in search for a definite solution.
Good luck!

secure booting error! Can't boot

Hi,
Yesterday I have flashed a 6.0 ROM and right afterwards a supersu on my G Pad.
I guess something got messed up in the process because now I can't boot the ROM and not even boot into recovery.
I've tried to get into download mode using LG PC suite, but without success. someone has an idea how I can maybe save the tablet?
here is the error that I get :

I assume you have the V500 variant? If you go through the motions of putting it in Download mode through the hardware keys (I don't know if it's the same as on my VK810 variant), does it show up in Windows' Device Manager as "LGE..." in both the Modem and Ports section? If so, try flashing a TOT or KDZ made for your variant.

roirraW "edor" ehT said:
I assume you have the V500 variant? If you go through the motions of putting it in Download mode through the hardware keys (I don't know if it's the same as on my VK810 variant), does it show up in Windows' Device Manager as "LGE..." in both the Modem and Ports section? If so, try flashing a TOT or KDZ made for your variant.
Click to expand...
Click to collapse
I don't see it under ports.
maybe I need a driver that will match win10?

Dor-b said:
I don't see it under ports.
maybe I need a driver that will match win10?
Click to expand...
Click to collapse
What about under Modem? If it shows up under Modem then it might be worth a try flashing a KDZ with LG Flash Tool 2014.
I've never had to get a different driver package for different flavors of Windows for my LG devices. I've used the same packages on 7, 8.1 and 10 without any trouble. I don't know if things are different with non-Verizon LG devices, however, but I doubt it since LG is the one who does the driver work. I always go straight to LG's or in my case Verizon's website for the latest driver for my devices.
Are there anything listed in Device Manager as Unknown Device? If not, then it's not likely installing a different driver will produce a different result, as if Windows can't even see the device as unknown, then installing the driver won't help, but it can't hurt to try the latest driver version if you haven't already. Reboot after installing the driver and use the original USB cable and preferably with a USB 2.0 port that comes straight off your PC's motherboard (or on the back of the PC) and not through a USB hub.

roirraW "edor" ehT said:
What about under Modem? If it shows up under Modem then it might be worth a try flashing a KDZ with LG Flash Tool 2014.
I've never had to get a different driver package for different flavors of Windows for my LG devices. I've used the same packages on 7, 8.1 and 10 without any trouble. I don't know if things are different with non-Verizon LG devices, however, but I doubt it since LG is the one who does the driver work. I always go straight to LG's or in my case Verizon's website for the latest driver for my devices.
Are there anything listed in Device Manager as Unknown Device? If not, then it's not likely installing a different driver will produce a different result, as if Windows can't even see the device as unknown, then installing the driver won't help, but it can't hurt to try the latest driver version if you haven't already. Reboot after installing the driver and use the original USB cable and preferably with a USB 2.0 port that comes straight off your PC's motherboard (or on the back of the PC) and not through a USB hub.
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It doesn't show under modem as well . I really don't know what else I can try.
I even tried to connect it on a win8.1 machine , but the tablet was not recognized as well.

Dor-b said:
It doesn't show under modem as well . I really don't know what else I can try.
I even tried to connect it on a win8.1 machine , but the tablet was not recognized as well.
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Are you using the original USB cable that came with the device? After you install the driver, reboot the PC without the device connected, then go through the motions of putting the device in Download mode and connect the device to a USB 2.0 port (preferred over USB 3.x) that comes directly off the PC's motherboard - not through a USB Hub.
Give the PC up to 10 minutes to load the driver you had previously installed. Every time you connect a device for the first time to a different USB port, it has to load the driver again, and depending on various factors can take anywhere from 30 seconds to 10 minutes. After that amount of time if the Device Manager still isn't showing the device in the Modem and Port sections, then I don't have any idea what else to try either.

Unable to flash ROM due to PC not recognizing device

Hello friends!
New registered user here but have already read tons of threads regarding G3 troubleshooting. Anyway, have decided to post this problem and if a similar situation has already been posted (and solved), please provide link.
For some strange reason, my G3 have decided to stay in the LG logo (I understand that this is the so-called boot-loop). This happened when the phone suddenly restarted while watching a YT vid and the battery still at 30%++. The phone just keeps on restarting until such a time that it never got pass the LG logo.
Here are the things that I have already tried to no avail:
1. Enter Hard Reset page via hardware keys (Power + Vol Up buttons). Have chosen "Yes" to hard reset device but alas, it never got pass the LG logo.
2. Downloaded PC suite, KDZ flashtool, and LGUP. Installed all three software. Connected G3 to PC and entered download mode (Vol Down while inserting USB cable). Unfortunately, unable to fully use either of the three software since the PC cannot detect G3.
Number 2 is quite strange since I have downloaded and installed all G3 drivers. This I know since a friend of mine who owns a working G3 unit was detected by the computer and can sync with the PC suite.
For some strange reason, everytime I connect my broken G3 to the computer, it is not detected by the PC and was not even listed in the device manager.
Any help and advise would be highly appreciated
I already downloaded all necessary tools (KDZ, LGUP, and flashtool) to flash the ROM but I need the PC to see the G3 unit to be able to do so.
By the way, before the bootloop scenario: the debugging (or is it developer?) options are disabled and I'm not sure if the bootloader is locked or unlocked.
I hope all this info is of any use.
Thanks a lot in advance

Have you tried simpler solutions first? Like, trying another USB ? Or another USB port from your pc? This maybe hardware related rather than software. You should try that before anything else. (Maybe you did?)

neyvermore said:
Have you tried simpler solutions first? Like, trying another USB ? Or another USB port from your pc? This maybe hardware related rather than software. You should try that before anything else. (Maybe you did?)
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Thanks for the reply. Yup, have done those. Tried a different cable, different USB port, and borrowed a working G3 unit. The good G3 unit was detected by the PC but when I connect my broken G3 (same cable and same USB port), the PC does not detect it (not even listed in device manager).
Because of this hurdle, I couldn't flash with LGUP (it states no handset was connected). The KDZ flashtool basically says the same message.
By the way, my debugging options are disabled before this whole problem started. Could that be a reason why the PC won't detect the unit?