Recently bought a used Nexus 7 LTE for my son to use after he broke his tablet. Trying to get Lineage OS on it but I cannot see it via USB on anything...
Windows 8 - Doesn't see the device at all, nothing listed in Device Manager. Device is charging off USB cable.
Tried 5 known good cables. Same cable on same computer with different devices works.
Ubuntu - Nothing shows in lsusb - Same as above, tried many cables and all charge the device but nothing will connect.
Device has USB Debugging enabled, I've also tried it disabled.
MTP is enabled, also tried the PTP with same results.
I have tried the official Google drivers as well as older drivers found within these forums.
Not even a generic or invalid device shows in Device Manager on Windows.
Used Android Studio to install Google Drivers, still nothing.
I've tried factory reset and wipe cache partitions. Never shows up.
I am assuming at this point the device has a bad USB port. I am hoping perhaps I missed something and someone knows what that is. I've culled the forums and a LOT of these had similar issues but mostly driver related. I cannot even see it to try different drivers. Some were cable but I've tried many cables that work in other devices.
Are there any other ways to connect to the device to do the OEM unlock and install TWRP and Lineage?
Device is bone stock with Android 5.1 (BUILD LMY470) - Connects to WiFi and LTE network just fine.
Fixed
RESOLVED:
Installed a Root app (KingRoot) and rooted device.
Installed official TWRP app, downloaded and installed TWRP bootloader
Downloaded latest Nightly of Lineage OS, used Astro File manager to move to root
Rebooted into TWRP, Wiped System/Data/Cache/Dalvik
Installed Lineage OS ROM.
Rebooted.
Profit.
compnird said:
RESOLVED:
Installed a Root app (KingRoot) and rooted device.
Click to expand...
Click to collapse
It is an interesting workaround but the main issue is not resolved. It looks like a hardware fault, there are 3 possibilities:
1 broken data contacts of the USB port
2 unsoldered data lines between the USB port and the PCB
3 disconnected USB data lines between the daughterboard and motherboard
Most likely is #2 but the easiest is #3 which can be fixed by re-seating of the wide, silver cable interconnecting the PCBs. All you have to do:
- disconnect the battery
- unlock the cable's connectors
- pull out and push it back in
- relock
- reconnect the battery
Good luck.
Hi all,
Apologies in advance for using this post but I have a similar issue with my device. I accidentally ejected the device while I was transferring some data to my computer instead of a memory stick. Usually the computer should say operation is invalid since the device is in use however without any prompts it ejected the device.
So now when I plug my Nexus into my laptop via USB the device is recognised for a second and disconnects and then reconnects and carries on this pattern. I've tried a number of different methods that I researched online including:
Deleting the drivers and reinstalling them
Changing USB power settings
None of the above and fixed the issue of being unable to connect to my computer via USB. Has anyone come across this problem before and if so can you recommend a potential fix?
B3.mach said:
...so can you recommend a potential fix?
Click to expand...
Click to collapse
Hi, while it appears that your PC is responsible for the issue, please check the N7 on another PC or with a OTG drive. When you're sure your N7 and USB cable are OK, we can fix the PC but what OS is on it? If it is Windows then do the following:
- disconnect N7
- run "regedit.exe"
- delete these keys
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\Vid_18d1&Pid_4ee1
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\Vid_18d1&Pid_4ee2- reboot PC
- reboot N7
- connect N7
OK?
k23m said:
Hi, while it appears that your PC is responsible for the issue, please check the N7 on another PC or with a OTG drive. When you're sure your N7 and USB cable are OK, we can fix the PC but what OS is on it? If it is Windows then do the following:
- disconnect N7
- run "regedit.exe"
- delete these keys
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\Vid_18d1&Pid_4ee1
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\Vid_18d1&Pid_4ee2- reboot PC
- reboot N7
- connect N7
OK?
Click to expand...
Click to collapse
Hi k23m,
Thank you the reply. I can confirm one of the first things I tried was connecting the device to a different laptop - where it connected properly. Both laptops are using Windows 10 and I've tried different USB cables to confirm that the wire isn't at fault either - so know my original laptop has the issue.
So I've attempted your the instructions you mentioned and the first thing I noticed was when I was in the Registry Editor there was no 4ee1 and just 4ee2. I attempted to delete the registry files for 4ee2 and came across the error messaged that states, 'Cannot delete VID_18D1&PID_4EE2: Error while deleting key.'. I had a look on the internet to see if there was a solution to deleting the files and it mentioned to modify the permissions as well as using a few programs to delete them. However after attempting these instructions still luck in deleting them.
Any further suggestions?
Thanks
B3.mach said:
there was no 4ee1 and just 4ee2.
....
I attempted to delete the registry files for 4ee2 and came across the error messaged that states, 'Cannot delete VID_18D1&PID_4EE2: Error while deleting key.'. I had a look on the internet to see if there was a solution to deleting the files and it mentioned to modify the permissions as well as using a few programs to delete them. However after attempting these instructions still luck in deleting them.
Click to expand...
Click to collapse
Please get https://github.com/jschicht/RunAsTI and extract it, then...
- right-click RunAsTI64.exe and run it as admin
- in the newly created command window type and run "regedit"
- delete the VID_18D1&PID_4EE2 key
- search the entire registry for ALL "VID_18D1&PID_4EE1" keys and delete them (if found any)
- reboot PC!
Also, can you confirm that a different device connects properly to the faulty PC using the MTP protocol? If not, then deleting 4EE1/4EE2 will not help and the issue will have to be further explored.
k23m said:
- right-click RunAsTI64.exe and run it as admin
- in the newly created command window type and run "regedit"
- delete the VID_18D1&PID_4EE2 key
- search the entire registry for ALL "VID_18D1&PID_4EE1" keys and delete them (if found any)
- reboot PC!
Also, can you confirm that a different device connects properly to the faulty PC using the MTP protocol? If not, then deleting 4EE1/4EE2 will not help and the issue will have to be further explored.
Click to expand...
Click to collapse
Hi k23m,
Once more thank you for the instructions. I can confirm my mobile connects to my laptop fine through a MTP protocol connection with no issues. I've downloaded the files as deleted the keys and values as mentioned but still no success.
Thanks
B3.mach said:
Hi k23m,
Once more thank you for the instructions. I can confirm my mobile connects to my laptop fine through a MTP protocol connection with no issues. I've downloaded the files as deleted the keys and values as mentioned but still no success.
Thanks
Click to expand...
Click to collapse
Hello B3.mach, let's summarize:
N7-MTP --> PC1 /NO
N7-MTP --> PC2 /OK
phone-MTP --> PC1 /OK
Re-confirmed?
Can you see any meaningful logs in Windows Event Viewer around the time of N7-MTP --> PC1? If so, quote them. To stimulate more logs kill the MTP-responsible WudfHost.exe process while you attempt N7-MTP --> PC1 and re-connect N7.
Next, please try these:
N7-fastboot --> PC1?
N7-TWRP-MTP --> PC1?
N7-PTP --> PC1?
Finally, let's do a total clean-up of all N7's traces in the system:
- disconnect N7
- delete all "VID_18D1&PID_4EE1" keys from the registry yet again
- delete all *.inf files which contain "VID_18D1&PID_4EE1" from C:\Windows\inf\ folder
- reboot
- connect N7
It has to work now
k23m said:
Hello B3.mach, let's summarize:
N7-MTP --> PC1 /NO
N7-MTP --> PC2 /OK
phone-MTP --> PC1 /OK
Re-confirmed?
Can you see any meaningful logs in Windows Event Viewer around the time of N7-MTP --> PC1? If so, quote them. To stimulate more logs kill the MTP-responsible WudfHost.exe process while you attempt N7-MTP --> PC1 and re-connect N7.
Next, please try these:
N7-fastboot --> PC1?
N7-TWRP-MTP --> PC1?
N7-PTP --> PC1?
Finally, let's do a total clean-up of all N7's traces in the system:
- disconnect N7
- delete all "VID_18D1&PID_4EE1" keys from the registry yet again
- delete all *.inf files which contain "VID_18D1&PID_4EE1" from C:\Windows\inf\ folder
- reboot
- connect N7
It has to work now
Click to expand...
Click to collapse
Hi k23m,
It seems by doing a fastboot connection it fixed the issue - not sure as to why it did it but thank you!
But to confirm as I was going through your instructions -
N7-MTP --> PC1 /NO
N7-MTP --> PC2 /OK
phone-MTP --> PC1 /OK
Correct
I had a look in the event viewer during the time of the mishap and couldn't see any useful logs that related to the any errors.
So as I was working my way down to your instructions, I did a fastboot and the issue seemed to have stopped and the N7 connects to my laptop without disconnecting.
Thank you for your helpful instructions and your patience with helping me resolve the issue.
Best regards,
b3
Related
If your PC is on a domain (typically a work network) the administrators may have following this MS virus alert KB http://support.microsoft.com/kb/962007 which stops WMDC dead and windows mobile phones do not install when connected with USB. There are many discussions about this problem around, but non seem to have this solution.
Took me a long time to figure this out - hope it helps. Worked on Windows 7 for me, also works on Vista. I tried to install/uninstall WMDC and WP5 & 6 many times without success. But these would install on my Win7 Home PC without a hitch. Figured it may to with group policy.
The trick to fix this is, open Regedit on PC.
Right click and select permissions on
HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion
Select "Owner: TrustedInstaller" Change TrustedInstaller permissions to: Full Control & Read, not inherited
Next right click and select permissions on HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SvcHost
Select Owner: System
Change TrustedInstaller permissions to: Full Control & Read, inherited from CurrentVersion
(Actually in the end I changed all permissions in these 2 to Full Control & Read)
Save your work. Reboot and try to connect your windows mobile phone via USB and with any luck WMDC will download (again, even if it installed) and the phone will connect.
Good Luck
This is not working for me on a new Windows 7 PC. Any ideas?
Made regedit changes and rebooted - checked changes rebooted.
WMDC still not recognizing device
oucha said:
This is not working for me on a new Windows 7 PC. Any ideas?
Made regedit changes and rebooted - checked changes rebooted.
WMDC still not recognizing device
Click to expand...
Click to collapse
Sorry, I missed this message. I did change the way I did this slightly, but I don't have my notes with me. PM me or leave a message if still a problem
oucha said:
This is not working for me on a new Windows 7 PC. Any ideas?
Made regedit changes and rebooted - checked changes rebooted.
WMDC still not recognizing device
Click to expand...
Click to collapse
Made changes to above instructions. Let me know if any further problmes
I thought I was doing great after uninstalling bloatware. However, when I tried to connect my Note 2 to my PC via USB I received the error that MTP USB Device driver could not be loaded. Apparently I must have uninstalled something on my Note 2 that is not allowing me to connect to the PC via USB. I have been searching for days, read many postings with the same problem, downloading various Driver apps to no avail. I even downloaded and installed Samsung Drivers which also did not work. I still can use my USB plug from NOTE 2 to my Flash Drive to get stuff transfered to/from Note2/PC.
It never ends. Fix one thing and then another pops up. LOL
What else can I say except - H-E-L-P.
What de-bloater tool did you use ?
Does it show the apps it uninstalled ?
By default any de-bloater should only delete apps from /system/app and
/data/app.
Have you considered starting over by flashing root injected stock Rom?
Sent from my SGH-T889 using xda app-developers app
ciphercodes said:
What de-bloater tool did you use ?
Does it show the apps it uninstalled ?
By default any de-bloater should only delete apps from /system/app and
/data/app.
Have you considered starting over by flashing root injected stock Rom?
Click to expand...
Click to collapse
I did not use any de-bloater. I used Titanium Backup Pro (TBP) and have a complete list of all apks uninstalled.
In TBP under Backup/Restore all apks uninstalled are listed. Plus, I kept a list of all that I deleted.
No, I have not considered starting over by flashing root injected stock ROM. Thought about it, however, if I
do flash, I'm back to square one.
If I don't resolve this one problem, I will remain at this point until new OS comes out. I do have a work around for time being.
I do appreciate your help, time and concern. Thank you.
What really amazes me is that this problem is all over the Internet and I can't find a simple solution. I have Googled it,
been on here doing searches, reading postings, etc. I have even tried Driver Booster.
asctony said:
I did not use any de-bloater. I used Titanium Backup Pro (TBP) and have a complete list of all apks uninstalled.
In TBP under Backup/Restore all apks uninstalled are listed. Plus, I kept a list of all that I deleted.
No, I have not considered starting over by flashing root injected stock ROM. Thought about it, however, if I
do flash, I'm back to square one.
If I don't resolve this one problem, I will remain at this point until new OS comes out. I do have a work around for time being.
I do appreciate your help, time and concern. Thank you.
What really amazes me is that this problem is all over the Internet and I can't find a simple solution. I have Googled it,
been on here doing searches, reading postings, etc. I have even tried Driver Booster.
Click to expand...
Click to collapse
Sometimes we miss something small and obvious. Have you disabled USB debugging mode in Developer options?
AE74 said:
Sometimes we miss something small and obvious. Have you disabled USB debugging mode in Developer options?
Click to expand...
Click to collapse
Yes, I just tried that based on your suggestion. However, still got the same: MTP USB Device error. Thanks for your help.
asctony said:
Yes, I just tried that based on your suggestion. However, still got the same: MTP USB Device error. Thanks for your help.
Click to expand...
Click to collapse
Can you check your phone setting by dialing *#7284#?
Method 3 on the link below.
http://www.danrichard.com/2013/06/1...nect-to-pc-via-usb-with-unknown-device-error/
AE74 said:
Can you check your phone setting by dialing *#7284#?
Method 3 on the link below.
http://www.danrichard.com/2013/06/1...nect-to-pc-via-usb-with-unknown-device-error/
Click to expand...
Click to collapse
Tried this and again no success.
Method 3 – Ensure you have the right settings By default my phone was already set to the right settings for USB file transfers so I’ll assume most of these ship with the same configuration, hence why I have this as method 3. I found this on a forum and while it did not work for me, it seems a few other folks declared it a success.
1. Launch the phone key pad on your note and press *#7284# (don’t forget to start with that * symbol!) When you press the last pound sign (#) this will bring up an option that will allow you to change your USB connection settings (modem or PDA) – change it to PDA.
I did not get any option that allowed me to change the USB Connection settings when I entered *#7284#. So I dialed that number and got an error Unable to process request.
Tried new USB cable and it still tried to load/install device drivers but not successful. Same error MTP USB Device Failed.
Thanks again for trying to help. I do appreciate your help and time. Still looking for a resolution.
asctony said:
Tried this and again no success.
Method 3 – Ensure you have the right settings By default my phone was already set to the right settings for USB file transfers so I’ll assume most of these ship with the same configuration, hence why I have this as method 3. I found this on a forum and while it did not work for me, it seems a few other folks declared it a success.
1. Launch the phone key pad on your note and press *#7284# (don’t forget to start with that * symbol!) When you press the last pound sign (#) this will bring up an option that will allow you to change your USB connection settings (modem or PDA) – change it to PDA.
I did not get any option that allowed me to change the USB Connection settings when I entered *#7284#. So I dialed that number and got an error Unable to process request.
Tried new USB cable and it still tried to load/install device drivers but not successful. Same error MTP USB Device Failed.
Thanks again for trying to help. I do appreciate your help and time. Still looking for a resolution.
Click to expand...
Click to collapse
Perhaps you may not have the system file Phone Utility 1.0.0 or corrupted.
AE74 said:
Perhaps you may not have the system file Phone Utility 1.0.0 or corrupted.
Click to expand...
Click to collapse
Yes, I do have Phone UTL as shown in TBP. How do I access it? I can't under the Method 3.
asctony said:
Yes, I do have Phone UTL as shown in TBP. How do I access it? I can't under the Method 3.
Click to expand...
Click to collapse
I am trying to find out if you have all the files and compare with my files to find out why I can access phone utility and you can't. Your issue may be the driver or files idk. Tbh, I am not an expert. Just another android enthusiast trying to help. I have Tweaked Rom so mine may be different. I have found 2 system files in TBU, Service Mode and MTP Application. Do you have them also? Does service mode work for you when you dial, for example, *#0011#?
SUCCESS-Thanks to Y-O-U!!!!
AE74 said:
I am trying to find out if you have all the files and compare with my files to find out why I can access phone utility and you can't. Your issue may be the driver or files idk. Tbh, I am not an expert. Just another android enthusiast trying to help. I have Tweaked Rom so mine may be different. I have found 2 system files in TBU, Service Mode and MTP Application. Do you have them also? Does service mode work for you when you dial, for example, *#0011#?
Click to expand...
Click to collapse
Yes, I uninstalled both of those. Re-installed both Service Mode and MTP Application, powered off both PC and Note 2. Rebooted, USBd Note 2 to PC and SUCCESS!!!!!!!!!
Thank you very much for your help!!!!! You are no longer a Jr. U R A SR!!!
Hey gang!
(I tried searching this forum for my issue, but the search form keeps giving me errors like "An error occurred while performing a Searchlight query:
connection to 10.0.100.17:9312 failed (errno=111, msg=Connection refused)." So, sorry if there's a thread about this already :S)
I'm trying to access my M8's storage through Windows Explorer via USB. Been using a OneX until now, which lets me do that just fine. But the M8 just gives me an MTP connection when I plug in the cable, which doesn't let me look at the data on it (the device shows up in Explorer, but when I open it, it just stays empty - no files or folders).
I've tried installing the latest USB drivers from this thread but the setup just won't start. It briefly pops up in task manager, but nothing happens. Turned off UAC, anti virus and what-have-you. When I try an older version of the drivers, Windows tells me they're already installed.
Then I just went with HTC Sync. Installed it, hooked up the phone, it starts fine. But I can only access the Home, Gallery and Music tabs. The Files tab is greyed out, which I think is curious.
Anyone got any ideas?
Thanks!
Did you entert your PIN on your Lockscreen before you checked the explorer, else the device is shown empty ?!
Forsaked said:
Did you entert your PIN on your Lockscreen before you checked the explorer, else the device is shown empty ?!
Click to expand...
Click to collapse
Yep, the phone is unlocked.
Hey all,
I just used root tool yesterday (http://forum.xda-developers.com/win.../jailbreak-interop-unlock-windows-10-t3178140 )and I loss access on my PC.
This is a Nokia 929 (Verizon ICON) with build 10512 on it.
When I connect to a PC, I get the noise on my phone (and slow charging message) but, the PC does nothing, does not see a connection. Tried 3 different PCs and rebooted my phone in between. I need to transfer files on and off the phone.
Any idea on how to fix this WITHOUT hard resetting ?
DavidinCT said:
Hey all,
I just used root tool yesterday (http://forum.xda-developers.com/win.../jailbreak-interop-unlock-windows-10-t3178140 )and I loss access on my PC.
This is a Nokia 929 (Verizon ICON) with build 10512 on it.
When I connect to a PC, I get the noise on my phone (and slow charging message) but, the PC does nothing, does not see a connection. Tried 3 different PCs and rebooted my phone in between. I need to transfer files on and off the phone.
Any idea on how to fix this WITHOUT hard resetting ?
Click to expand...
Click to collapse
Keep it connected for 10 minutes on the pc. If it doesn't show, unplug and plug it again.
You "lose" access to your phone from the pc because you enabled Full MTP. Enabling Full MTP your phone need to list ALL files and folder and not only your common folder like Documents and so on but also system files from the root of the phone (C:\).
You don't need of that. Deploy CustomPFD, open it, go to tweaks page > General tweaks, Utilities (page), on full fs access, enable it and then disable it.
Unplug and replug it and you have done.
This seems to be an issue with the MTP protocol being unable to handle the sheer amount of files and causing the driver to crash sometimes.
Currently, I have the HKLM\Software\Microsoft\MTP\DataStore key set to C:\Data\Users and it works fine that way. I modify this path according to what I want to access, instead of having it set to the root of C:\.
ADeltaX said:
Keep it connected for 10 minutes on the pc. If it doesn't show, unplug and plug it again.
You "lose" access to your phone from the pc because you enabled Full MTP. Enabling Full MTP your phone need to list ALL files and folder and not only your common folder like Documents and so on but also system files from the root of the phone (C:\).
You don't need of that. Deploy CustomPFD, open it, go to tweaks page > General tweaks, Utilities (page), on full fs access, enable it and then disable it.
Unplug and replug it and you have done.
Click to expand...
Click to collapse
Thanks ! Tried that, it didn't work
acewing905 said:
This seems to be an issue with the MTP protocol being unable to handle the sheer amount of files and causing the driver to crash sometimes.
Currently, I have the HKLM\Software\Microsoft\MTP\DataStore key set to C:\Data\Users and it works fine that way. I modify this path according to what I want to access, instead of having it set to the root of C:\.
Click to expand...
Click to collapse
Tried that it worked, maybe a combo of both did it... Thanks to both of you !
What folder on the C: drive is where the apps are stored, wanted to check a setting for a game....?
DavidinCT said:
Thanks ! Tried that, it didn't work
Tried that it worked, maybe a combo of both did it... Thanks to both of you !
What folder on the C: drive is where the apps are stored, wanted to check a setting for a game....?
Click to expand...
Click to collapse
Android stored apps or WP stored apps?
ADeltaX said:
Android stored apps or WP stored apps?
Click to expand...
Click to collapse
WP apps...
Mine had some weird issue that USB wasn't even recognized when Windows 10 was booted, but while booting it's still recognized... Thou, I already fixed it with a factory reset....
Sent from Ponyville
DavidinCT said:
WP apps...
Click to expand...
Click to collapse
U:\PROGRAMS or C:\Data\PROGRAMS
Challenge / Background:
I recently rooted my Sprint HTC 10 to Viper v10 3.5.0 with SuperUser v2.74-2. This was my second root and I had a couple hiccups along the way that required me to re-flash during the process to make sure I did it right....ended up being something different. Everything works though as expected with the exception that I noticed tonight that my Windows 7 laptop does not recognize my phone. After multiple tries trying to update drivers on my laptop (can see it in device manager, but error) and that type of thing, I gave up and tried to work the problem from my phone. But, the only solution I could find online was regarding ensuring that the USB tethering option was on. Additionally, when booted to TWRP v3.0.2-6 I also was unable to mount my phone as a USB storage device.
Temporary work around:
I will still be looking for a permanent solution, and if anyone has ideas please let me know, but if others have this problem, an option that worked for me was utilizing "USB Tethering" in lieu of "(USB) File Transfers". In order to do this, I downloaded the below app from Google Play and followed the instructions. Its a little slow moving from folder to folder, but works as a temporary solution for the moment, or until I try to reflash again in case I mistakenly selected the wrong option in Viper.
I utilized the MTP-Alternative USB Drive application by ClearEvo located in the store for free.
Hope this helps.