PTP, MTP, adb no longer works after root obtained - T-Mobile LG V10 Q&A, Help & Troubleshooting

was able to root my phone using the steps described in the forums where the PC recognized the device with no problems every step of the way. however after getting root whenever I plug in the phone to a PC I no longer see it connected via Windows or via adb. I've tried rebooting both PC and phone, changing between MTP and PTP, as well as reinstalling the LG and adb driver, but no dice. Interestingly though I can use fastboot on the PC to update TWRP and boot TWRP, but nothing else. I feel like a setting somewhere might need to be changed, but it seems I've done everything I know of... any suggestions?

dimm0k said:
was able to root my phone using the steps described in the forums where the PC recognized the device with no problems every step of the way. however after getting root whenever I plug in the phone to a PC I no longer see it connected via Windows or via adb. I've tried rebooting both PC and phone, changing between MTP and PTP, as well as reinstalling the LG and adb driver, but no dice. Interestingly though I can use fastboot on the PC to update TWRP and boot TWRP, but nothing else. I feel like a setting somewhere might need to be changed, but it seems I've done everything I know of... any suggestions?
Click to expand...
Click to collapse
Re enable adb debugging on the phone settings.
Sent from my LG-H901 using XDA Premium HD app

cameljockey1 said:
Re enable adb debugging on the phone settings.
Sent from my LG-H901 using XDA Premium HD app
Click to expand...
Click to collapse
tried revoking USB debugging authorizations and toggling the USB debugging option... Windows now sees it in 'Device Manager', but I don't see any way to access it when I go to 'My Computer'! Also tried toggling between MTP and PTP, no luck...

dimm0k said:
tried revoking USB debugging authorizations and toggling the USB debugging option... Windows now sees it in 'Device Manager', but I don't see any way to access it when I go to 'My Computer'! Also tried toggling between MTP and PTP, no luck...
Click to expand...
Click to collapse
Unplug from computer. Disable usb debug adb. Connect in computer in different port and see if it installs anything. If so wait till done. Then unplug and enable adb and plug in same port from before.
Sent from my LG-H901 using XDA Premium HD app

cameljockey1 said:
Unplug from computer. Disable usb debug adb. Connect in computer in different port and see if it installs anything. If so wait till done. Then unplug and enable adb and plug in same port from before.
Sent from my LG-H901 using XDA Premium HD app
Click to expand...
Click to collapse
argh, no dice! everything you detailed happened, but still nothing listed in 'My Computer'!

dimm0k said:
argh, no dice! everything you detailed happened, but still nothing listed in 'My Computer'!
Click to expand...
Click to collapse
Try this have it unplugged. Turn off. Hook up to computer. Let it do its thing then turn on phone while plugged in
Sent from my LG-H901 using XDA Premium HD app

Device Manager
Do you see the phone in device manager when it is plugged in?

cameljockey1 said:
Try this have it unplugged. Turn off. Hook up to computer. Let it do its thing then turn on phone while plugged in
Sent from my LG-H901 using XDA Premium HD app
Click to expand...
Click to collapse
Tried this with no luck =(
bkgibby said:
Do you see the phone in device manager when it is plugged in?
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Click to collapse
yes, before creating this post it also showed in Device Manager, but it showed up with an exclamation saying the device could not be started. now it shows up as working properly, but no way to access it.

anyone have any other solutions/suggestions?

dimm0k said:
anyone have any other solutions/suggestions?
Click to expand...
Click to collapse
Try to unroot and see if it works.

sully9292 said:
Try to unroot and see if it works.
Click to expand...
Click to collapse
same error, i unroot this phone and works fine again debbuging...
---------- Post added at 10:17 PM ---------- Previous post was at 09:41 PM ----------
dimm0k said:
was able to root my phone using the steps described in the forums where the PC recognized the device with no problems every step of the way. however after getting root whenever I plug in the phone to a PC I no longer see it connected via Windows or via adb. I've tried rebooting both PC and phone, changing between MTP and PTP, as well as reinstalling the LG and adb driver, but no dice. Interestingly though I can use fastboot on the PC to update TWRP and boot TWRP, but nothing else. I feel like a setting somewhere might need to be changed, but it seems I've done everything I know of... any suggestions?
Click to expand...
Click to collapse
i fix this using this, download magisk16.zip and re-root using twrp, before that reboot phone and usb debbuing will come works again! if you use latest Magisk16.6 you lost again USB debbugging

Related

[Q] Unable to see device in adb

I received my replacement DNA last night and I am unable to get my Windows 8 laptop to recognize my phone in adb mode. I had no trouble with my original. Here is what I have done to try to fix it. I have downloaded and re installed htc sync, updated the drivers and uninstalled htc sync. I also re downloaded the platform tools and set it up on my c drive again. Any ideas?
It has to be a usb 3.0 port. Switch to another port on your computer. It needs to be usb 2.0
Sent from my HTC6435LVW using xda app-developers app
Yeah I tried that too. Its weird when its booted normally it can see it and be rebooted to fastboot. But after that it cant see it anymore. I feel like I'm forgetting to do something simple lol!
Booted normally adb devices should recognize it
Booted in bootloader adb devices won't recognize it
Booted in fastboot, fastboot devices should recognize it not adb devices
Where are you having issues. I guess I'm confused.
Sent from my HTC6435LVW using xda app-developers app
Thanks for that flip the light switch suggestion. Its been a long week.
Danzoman316 said:
I received my replacement DNA last night and I am unable to get my Windows 8 laptop to recognize my phone in adb mode. I had no trouble with my original. Here is what I have done to try to fix it. I have downloaded and re installed htc sync, updated the drivers and uninstalled htc sync. I also re downloaded the platform tools and set it up on my c drive again. Any ideas?
Click to expand...
Click to collapse
Enable USB debugging on your phone, if it is enabled already disable and re enable it.
Davyath said:
Enable USB debugging on your phone, if it is enabled already disable and re enable it.
Click to expand...
Click to collapse
I got it. Bootloader unlock great success! I was simply having a brain fart. Thanks for the help.

[Q] USB will not connect to PC

Heres my issue, when I plug the usb cable in it doesnt connect to the PC. it tries to connect but then Windows say its disconnected. For kicks I went in to RSD and it connected and was able to flash back to stock, (I was on stock but just rooted). I am fully stock now and still have the same issue. Does anyone have any suggestions? I have tried multiple cables and 2 different PC's.
Thanks for any help!
Does the usb menu come up on the phone? Select storage device.
Reinstall the drivers from Moto.
Google usbdeview.exe un install all moto drivers reboot computer. Plug phone in let computer reload all the drivers.
http://www.nirsoft.net/utils/usb_devices_view.html
Sent from my MB855 using xda premium
rbeavers said:
Does the usb menu come up on the phone? Select storage device.
Reinstall the drivers from Moto.
Google usbview.exe un install all moto drivers reboot computer. Plug phone in let computer reload all the drivers.
Sent from my MB855 using xda premium
Click to expand...
Click to collapse
Hi, thanks for the info I tried uninstalling and when I plug the phone in it pops up USB Connection then goes away and PC say Device unplugged, but phone will charge. Wondering if the port is bad.
In the notifications at the top does it show the USB icon. Can you open it to see the options?
rbeavers said:
In the notifications at the top does it show the USB icon. Can you open it to see the options?
Click to expand...
Click to collapse
i too have similar problem the rsd flash process fails in remuneration with windows prompting usb malfunctioned
i request to give a solution

[Q] GS4 won't stay in installer mode

Hi all,
I'm planning to root my GS4 but I noticed that when I plug my phone into my computer (win 7) it switches to Media Device instead of staying in Installer mode. I have USB debugging checked and install from unknown sources checked. I've tried to uninstall the drivers and then plug back in to reinstall the drivers but have had the same result.
Has anyone heard of this and know a possible solution or something I could try? I really don't want to start rooting my phone if its not staying in debug mode.
Thanks!
lewbrah
lewbrah said:
Hi all,
I'm planning to root my GS4 but I noticed that when I plug my phone into my computer (win 7) it switches to Media Device instead of staying in Installer mode. I have USB debugging checked and install from unknown sources checked. I've tried to uninstall the drivers and then plug back in to reinstall the drivers but have had the same result.
Has anyone heard of this and know a possible solution or something I could try? I really don't want to start rooting my phone if its not staying in debug mode.
Thanks!
lewbrah
Click to expand...
Click to collapse
You could try to Odin the Stock image and then try to root from there.
DarkMenace said:
You could try to Odin the Stock image and then try to root from there.
Click to expand...
Click to collapse
Thanks for the reply. I am on Stock image (haven't done anything to my phone yet). It's just weird why it won't stay on installer mode if I have debug mode checked.
lewbrah said:
Thanks for the reply. I am on Stock image (haven't done anything to my phone yet). It's just weird why it won't stay on installer mode if I have debug mode checked.
Click to expand...
Click to collapse
Try getting the latest USB drivers from my signature. You should be in MTP mode when it's connected to the PC I do believe. It will then show a picture of you phone and you can browse the device then.
DarkMenace said:
Try getting the latest USB drivers from my signature. You should be in MTP mode when it's connected to the PC I do believe. It will then show a picture of you phone and you can browse the device then.
Click to expand...
Click to collapse
Ok i'll try that. I thought if USB debugging was checked that there was a third mode (installer) that it stayed in besides the Media or Camera options that can be selected because I was reading another post on XDA about the root tool by a post from user Jondoyle24:
http://forum.xda-developers.com/showthread.php?t=2301720&page=11
lewbrah said:
Ok i'll try that. I thought if USB debugging was checked that there was a third mode (installer) that it stayed in besides the Media or Camera options that can be selected because I was reading another post on XDA about the root tool by a post from user Jondoyle24:
http://forum.xda-developers.com/showthread.php?t=2301720&page=11
Click to expand...
Click to collapse
Use the Recovery's/Root tools in my signature. I'll also PM you.

No USB connection to computer.

My LG E970 does not have an usb connection to the computer.
I tried connecting in fastboot and ADB via command prompt, the computer does not see it.
It says slow charging when connected to a computer, 2 different computers.
I have the LG united drivers installed, reinstalled and rebooted.
I was on 4.4 and I did a restore to stock ATT 4.1.2, still no luck.
I'm out of ideas.
EDIT:
I tried LGNPST from: http://pastebin.com/bRpR3aB6
I put it into download mode and the phone shows "DOWNLOAD MODE" "DO NOT UNPLUG the device until the process is complete"
It only shows that, LGNPST does not detect anything.
edroit said:
My LG E970 does not have an usb connection to the computer.
I tried connecting in fastboot and ADB via command prompt, the computer does not see it.
It says slow charging when connected to a computer, 2 different computers.
I have the LG united drivers installed, reinstalled and rebooted.
I was on 4.4 and I did a restore to stock ATT 4.1.2, still no luck.
I'm out of ideas.
EDIT:
I tried LGNPST from: http://pastebin.com/bRpR3aB6
I put it into download mode and the phone shows "DOWNLOAD MODE" "DO NOT UNPLUG the device until the process is complete"
It only shows that, LGNPST does not detect anything.
Click to expand...
Click to collapse
From there you need to select the ls970.dll and the bin file in lgnpst.
Sent from my Optimus G using xda app-developers app
mikeylikey said:
From there you need to select the ls970.dll and the bin file in lgnpst.
Sent from my Optimus G using xda app-developers app
Click to expand...
Click to collapse
It won't let you select anything unless something is detected. Example: "UNKNOWN PORT 01"
And nothing is detected.
edroit said:
It won't let you select anything unless something is detected. Example: "UNKNOWN PORT 01"
And nothing is detected.
Click to expand...
Click to collapse
Try Kush's universal adb drivers for windows. If you are running Win8.1, make sure it's usb2.0 and not 3.0. If it still doesn't see it, try a different windows os.
Sent from my Optimus G using xda app-developers app
mikeylikey said:
Try Kush's universal adb drivers for windows. If you are running Win8.1, make sure it's usb2.0 and not 3.0. If it still doesn't see it, try a different windows os.
Sent from my Optimus G using xda app-developers app
Click to expand...
Click to collapse
I tried the different drivers, still "slow charge mode on the phone." It is suppose to pop up that USB debugging notification on the phone if it senses a computer connection. I'm using windows 7 and usb 2.0 only. Tried on different computer, still slow charging mode.
did you turn on "usb debug" in setting->Develop options?
savingwizard said:
did you turn on "usb debug" in setting->Develop options?
Click to expand...
Click to collapse
Yes, it is on. Still only "slow charging mode"
Still not working after I flashed SnowLepoardJB's 800MB+ stock ROM. Any other suggestions?
Hi, I'm joining this thread since I have the same problem... My phone charges, but no device connection. Could there be a kernel module missing? Is there a way to check? A #lsmod type command?
Sent from my JY-G3 using xda app-developers app
Ok... I got a new USB cord and it works now.
Sent from my JY-G3 using xda app-developers app
brainstormtrooper said:
Ok... I got a new USB cord and it works now.
Sent from my JY-G3 using xda app-developers app
Click to expand...
Click to collapse
Good for you. I tried different USB cords, and it still doesn't work.
Well, if you can select USB debugging and charge the phone over USB, but the phone doesn't notice the computer then it may be a damaged USB port... I saw a thread about that on a Kindle I think... But it sounds like software isn't the problem... Good luck.
Sent from my JY-G3 using xda app-developers app
I recently had the same problem and my solution was to use the Koush Universal ADB Driver recommended by someone else. Prior to that all I could see the contents of my SD card and external SD card on the computer but always had some sort of driver issues and Windows telling me my driver wasn't installed correctly.
Using the official LG driver from the website didn't seem to help either.
OK... I know this thread has gotten old, but here's the final deal... It wasn't "exactly" the USB cables. It WAS the plug. The plug wasn't broken, just very dirty. I cleaned it out with a toothpick and now even the old cord works fine... So if you can't get the computer and phone to recognize each other, try cleaning the micro port in the phone
Sent from my JY-G3 using XDA Free mobile app
can't connect in download mode with Windows 8.1
brainstormtrooper said:
OK... I know this thread has gotten old, but here's the final deal... It wasn't "exactly" the USB cables. It WAS the plug. The plug wasn't broken, just very dirty. I cleaned it out with a toothpick and now even the old cord works fine... So if you can't get the computer and phone to recognize each other, try cleaning the micro port in the phone
Sent from my JY-G3 using XDA Free mobile app
Click to expand...
Click to collapse
My issue is that I can't connect to my computer with Windows 8.1 in Download Mode. If I want to flash, I need to find a friend who is using Windows 7. Can anybody help with this?
Other details: I've tried cleaning the ports, using another cable, using other USB connections, etc. When in Download Mode, SDK can't even detect the device. I'm pretty sure it's the fact that I'm using Windows 8.1, but I don't know what to do to fix this problem.
Thanks!
billp000 said:
My issue is that I can't connect to my computer with Windows 8.1 in Download Mode. If I want to flash, I need to find a friend who is using Windows 7. Can anybody help with this?
Other details: I've tried cleaning the ports, using another cable, using other USB connections, etc. When in Download Mode, SDK can't even detect the device. I'm pretty sure it's the fact that I'm using Windows 8.1, but I don't know what to do to fix this problem.
Thanks!
Click to expand...
Click to collapse
Not sure why you want to put your phone in download mode
If your just trying to connect your phone via USB to mount storage (meaning getting file off the internal storage and sd card), it should work fine.
If your trying to root your phone, you need to grab the android sdk and use the adb commands.
Gysper said:
Not sure why you want to put your phone in download mode
If your just trying to connect your phone via USB to mount storage (meaning getting file off the internal storage and sd card), it should work fine.
If your trying to root your phone, you need to grab the android sdk and use the adb commands.
Click to expand...
Click to collapse
The reason is that my phone is "bricked." I'm caught in a boot loop. The bootloader is locked on my LG phone so I can only get into Download Mode to fix stuff. But I can't fix stuff if my computer doesn't recognize my device. (I can connect fine when my phone boots up properly; just not in Download Mode). I've installed and uninstalled the LG drivers many times, so this is not the issue. What can I do with my Windows 8.1 computer to connect with my phone in Download Mode? Again, I CAN connect to Windows 7 computers, but I don't have one convenient to use, and I don't want to install lots of software on friends' computers...
billp000 said:
The reason is that my phone is "bricked." I'm caught in a boot loop. The bootloader is locked on my LG phone so I can only get into Download Mode to fix stuff. But I can't fix stuff if my computer doesn't recognize my device. (I can connect fine when my phone boots up properly; just not in Download Mode). I've installed and uninstalled the LG drivers many times, so this is not the issue. What can I do with my Windows 8.1 computer to connect with my phone in Download Mode? Again, I CAN connect to Windows 7 computers, but I don't have one convenient to use, and I don't want to install lots of software on friends' computers...
Click to expand...
Click to collapse
Try these steps and see if it works: http://forum.xda-developers.com/showthread.php?t=2013067
Gysper said:
Try these steps and see if it works: http://forum.xda-developers.com/showthread.php?t=2013067
Click to expand...
Click to collapse
That is what I would like to be able to do, but it assumes your device is recognized. One of the other posts on the same thread mentioned a similar issue but didn't mention a solution.
I've done some more exploring. I have, again, uninstalled and reinstalled the appropriate LG E970 drivers from the LG support site.
- When I am in fastboot mode, I see the attached image "01 Android.png" in device manager.
- When I am in recovery mode, I see the attached image "02 LG E-970.png" in device manager.
- When my phone fully boots up, I see the attached image "03 LGE Android MTP Device.png" in device manager. At this point, and only at this point, abd will list my phone as a device.
The problem is, I need a connection to my computer from recovery / download mode in case of a boot loop.
Can anyone help?

adb not working on pie

I've been having issues with adb on pie. It just doesn't recognise my phone. I've tried uninstalling and reinstalling the drivers but it doesnt work for me. Although, the pc can recognise my phone but not in adb. Whenever i run a adb command i don't get a prompt on my phone asking to allow the pc which is weird. I need help here.
Just had the same issue. On Windows. Reinstalled the adb drivers, didn't help. This, I think, is what resolved it for me, YMMV:
While the phone is plugged to PC,
disabled USB Debugging in Developer Options,
observed a toaster notification on Windows about updating/installing drivers for my phone,
enabled USB Debugging again, clicked Allow on the dialog that popped up,
and I was back in business.
nameanyone said:
Just had the same issue. On Windows. Reinstalled the adb drivers, didn't help. This, I think, is what resolved it for me, YMMV:
While the phone is plugged to PC,
disabled USB Debugging in Developer Options,
observed a toaster notification on Windows about updating/installing drivers for my phone,
enabled USB Debugging again, clicked Allow on the dialog that popped up,
and I was back in business.
Click to expand...
Click to collapse
Thanks. I'll try this once i get back home.
Me too
mayankjet said:
Thanks. I'll try this once i get back home.
Click to expand...
Click to collapse
I have the same problem, and it waas not fixed disabling and enabling USB debugging. Did you found the solution? Or someone found? Or God if you are there listening? Or the devil, i am ready to sell my soul for this.
marcebil said:
I have the same problem, and it waas not fixed disabling and enabling USB debugging. Did you found the solution? Or someone found? Or God if you are there listening? Or the devil, i am ready to sell my soul for this.
Click to expand...
Click to collapse
I think i had to update the adb to its latest version.
Sent from my Nokia 7.1 using XDA Labs

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