I'm having an issue where my thunderbolt does not recognize my device any longer. I used to have it set up with pdanet and everything worked well for about a week. All of a sudden, any computer i tried to plug the device into, wouldn't detect the phone. A friend of mine has tried his thunderbolt on my computer and it detects it.
When plugging my phone in, it pops up an error message with "USB Device not Recognized." In the device manager, the phone shows up as Unknown Device. I have tried this on 3 different pc's, using 3 different data cables. No USB symbol displays on the taskbar of the phone when I plug it in, however, it does charge.
What I have tried:
Changing data cables.
Using another PC.
Uninstalling device drivers and letting windows re-detect and install.
Downloaded HTC Sync and ran it after uninstalling drivers again and re-plugging the phone.
Changed different Connection settings on the phone, such as USB Debuggin on/off, and changing it to HTC Sync Mode, Charge Only, Disk Drive, etc
Mounted and unmounted SD Card in the phone settings.
OS: Windows 7 x64
Thank you for any help you may provide.
same problem
I have the same problem with HTC mytouch 3g 32B Android 2.2.1 when I plug it through usb under Vista.
Any suggestions?
Try installing the usb drivers from htc if you haven't.
http://dl4.htc.com/RomCode/Source_and_Binaries/USB_driver_20101122_release.zip
I have download the HTC usb drivers but when i go to control panel and uninstall the unknown device it just reinstalls it. when i try to update drivers using the location
ie C:\Users\sxristi\Downloads\android-usb-driver\Android USB Driver\i386
i get a reply
The best software for you device is already installed. Windows has determined that the driver software for your device is up to date.
and it continues to point to
unknown device
Oh one more things i got the usb drivers from Android SDK Manager the google usb drivers revision 4 and the weird thing is that i do not get the trident usb nor the debug icon on my HTC when i plug it in to my vista. I did get it once or twice before but not in general since the usb devices are not recognized. However when i boot on my Ubuntu os then i do get them recognized. so i guess the problem is with windows drivers somehow...
Thanks for the replies.
I've tried to install the drivers from HTC but Windows says that the driver is not compatible with my the device.
Also, I tried on a system with Windows XP and everything worked as intended, but I cannot get it to work properly in Win 7 x64 anymore.
When my win7 comp no longer sees my Tbolt I have to toggle the USB Debugging off then back on. Usually within a few seconds it reads it again. If that does not work I have also used the option to turn on internet pass through then change it back to hard drive mode. Either of those usually work for me. My drivers I used were from android sdk if that makes any difference. Hope this helps.
Sent from my ADR6400L using Tapatalk
These didn't work, but thanks for the input
HTC
My problem continues under Vista OS. I called HTC and they told me to re install their Sync after removing Adobe Air and all HTC drivers and Google USB drivers. I did that and reinstalled Sync and still nothing. They also told me to call microsoft for it seems operating system conflict.
My conclusion yields toward windows conflict. But I can not figure out this conflict. Perhaps something I have installed does not let my vista recognize the HTC android device and uses the windows usb drivers to create this "Unknown Device" under usb serial bus controllers. once it is an unknown device forget about Sync or ADB etc... The phone is just not recognized as android and you can not do much with it via windows.
For the person who suggested to turn "USB Debugging" on-off, i did that and still the computer recognizes that there is a usb device but again it says "usb device not recognized unknown device.."
any additional suggestions???
I've verified that my phone works fine on Windows XP. I still cannot connect to windows 7, though.
Try turning OFF Fast Boot and turning ON USB debugging. this helped for me.
same problem
I have a similar problem too .. i know its not the computer as other phones and pen drives are working ok.
Plus this phone has same problem on other computers too, where as other phones work fine.
So it has to do something with the phone and not the drivers or computer in anyway
I have the same problem, no PC recognizes my HTC Thunderbolt. Now change cable and tried with windows xp, 7 and 8. Is there any solution I can not root. I want to change the rom factory rom I do not like but I can not do anything because I do not recognize the usb. Also the menu does not appear when I connect via USB in the notification bar.
byron00 said:
I have the same problem, no PC recognizes my HTC Thunderbolt. Now change cable and tried with windows xp, 7 and 8. Is there any solution I can not root. I want to change the rom factory rom I do not like but I can not do anything because I do not recognize the usb. Also the menu does not appear when I connect via USB in the notification bar.
Click to expand...
Click to collapse
I'm having the same issue, with an HTC Rezound... just flashed a new rom, need to update boot.img but can't see my device via adb or fastboot... have tried changing usb cables, phone is in FASTBOOT mode... reinstalled HTC Drivers, just get USB Not Recognized error (Windows 8 64-bit)...
Any solution for this?
I recently started to root my LG phone but it failed throughout the process. Now everytime I connect my phone via USB to my computer charges my phone but my computer won't show it or read my phone like it is not connected nor will my phone say it is connected to my computer. I have the drivers downloaded. Is there a way to fix it?
KieKazami said:
I recently started to root my LG phone but it failed throughout the process. Now everytime I connect my phone via USB to my computer charges my phone but my computer won't show it or read my phone like it is not connected nor will my phone say it is connected to my computer. I have the drivers downloaded. Is there a way to fix it?
Click to expand...
Click to collapse
In 1990 to 2002 we have been using Serial Ports (COM1, COM2) and Parallel Ports(LPT1) for devices and they never gave connect problems like USB gives. USB works for some time and then the driver gets damaged or devices not recognized due to Voltage Problems, etc etc.
USB problems are very common these days. First thing you should try is, UNINSTALL DRIVER from PC and Restart PC. Connect PC to Internet, then reinstall latest LG Android Driver and connect phone with USB. Phone will install drivers for Slow Charging mode,...
...then select usb mode to PTP, phone will install driver for PTP,
...then select usb mode to MTP, phone will install driver for MTP,
...then select usb mode to LG Software Mode, phone will install driver for LG Sorftware Mode.
Now your phone is set for every mode you need. Hope this helps
cmahendra said:
In 1990 to 2002 we have been using Serial Ports (COM1, COM2) and Parallel Ports(LPT1) for devices and they never gave connect problems like USB gives. USB works for some time and then the driver gets damaged or devices not recognized due to Voltage Problems, etc etc.
USB problems are very common these days. First thing you should try is, UNINSTALL DRIVER from PC and Restart PC. Connect PC to Internet, then reinstall latest LG Android Driver and connect phone with USB. Phone will install drivers for Slow Charging mode,...
...then select usb mode to PTP, phone will install driver for PTP,
...then select usb mode to MTP, phone will install driver for MTP,
...then select usb mode to LG Software Mode, phone will install driver for LG Sorftware Mode.
Now your phone is set for every mode you need. Hope this helps
Click to expand...
Click to collapse
Hi, i have a Optimus L9 P778 (Argentina) I have problems for connect to the PC(Is a new device i not rooted or installed any). When connect phone with USB and install drivers. But the phone dont showme to select the connection type. When i swicht to PTP or MTP dont install new drivers.... only show this 3 options in my devices:
LG Mobile Phone
LG Mobile(Modem)
LG Mobile(Serial)
In My PC dont showme the device but the LG Support tool detect my phone, version of sw. But it says i need to install the drivers, if I enter an infinite loop saying the same thing.
Thanks for the help...
---------- Post added at 11:29 AM ---------- Previous post was at 11:13 AM ----------
Fixed! I make a Hard reset and now worsk Fine :laugh:.... fuking Android
i try to connect my Samsung fit 5670 mobile using USB cable in my windows 8.1 PC. It keeps on saying "USB not recognized", also installed drivers, lots of time but nothing happened.
Hallo to everyone.
Have some problems to connect my tablet to my PC.I got my Win7 Ultimate x64 is new
installed.
So i connected my Tablet i got BSOD with memory management error(dont think have something to do with tablet ,becouse my DRam was faulty)
.Hard resetet my PC.Plugged z2 again and there is nothing.. i hear the sound that say device is plugged in but no popup shows on on PC. No charging ,nothing.
On Tablet shows usb debugging connect.It is not normal .My HTC One connect while usb debugging on with my PC WITHOUT PROBLEM.If i turn usb debugging off and connect to my PC ,charging and connections works.
I thing it is windows problem but maybe someone can point me to what can i do
Reinstalling drivers did the trick
Hi,
I have a little problem connecting my D620r with my PC. WHen I connect it is not shown in windows explorer. All drivers are installed, in device manager it is shown as LGE Android MTP device, selected Media transfer from phone settings. Tried all ports, tested cable with another phone and it works. Sometimes it has a yellow mark in device manager (device cannot start code 10), driver version 3.12.0.0. Charging works, Lg Mobile Support tool works, adb works, tethering works, lg pc suite hangs at connecting but phone shows "connected with pc suite via usb". Idk if this matters but I use link2d, swap file created in cache partition, xposed, rooted. Also tried PTP but it doesn't work.
THanks.
Try downloadmode and then start mobile support tool
Try to connect your phone to another PC if you have or just go to any friend
Sent from my LG-D620 using XDA Free mobile app
you need enable debuging in developer settings ,it works for me