Previous 1 2 Next 16 Replies Latest reply: Jan 30, 2013 8:18 PM by LavenderTwin2
Dark Fiber Level 1 (25 points)

I thought I would post this message to help those running Windows 7 (or other versions of Windows) that might be having "USB Device Unrecognized" issues with their iPad when going to iOS 5.  In my case it is an iPad 2. 


Long story short... When upgrading to iOS 5 using iTunes 10.5, if you are getting "USB Device Unrecognized" error messages or Windows has trouble installing the USB driver with your iPad (or maybe another iDevice) and that device is connected to a USB hub of some sort that may have worked previously under iOS 4.x or earlier, the solution for me was to connect the iPad to one of my PC's main USB ports (as in the ones directly connected to the motherboard). For whatever reason, Windows is not able to recognize my iPad 2 running the first release version of iOS 5 when it is connected to the USB ports on my Dell 2408 LCD panel's hub. Even though this was never an issue with iOS 4.x


More detail...


I am running Windows 7 (64 bit) with all the latest updates and I had an iPad 2 running iOS 4.3.5 and I always docked it and my iPhone 4 to my PC using the USB hub on my Dell 2408 LCD panel.  I NEVER had any USB issues with either device until going to iTunes 10.5 & iOS 5.


The issue came up when I was doing a restore of the iOS 5 GM (which is the same as the final release of iOS 5) to my iPad 2.  When I started the restore, the iPad 2 gets reset to DFU mode (or whatever mode it gets in to start the restore) and at that point Windows complained about the USB Device being unrecognized.  After I gave up I told iTunes to do a regular restore back to the previous version (4.3.5) and Windows had no issues seeing my iPad and doing the restore connected to the same USB port.


So there appeared to be something about iTunes 10.5 or iOS 5 causes Windows to not be able to install the correct driver and have "USB Device Unrecognized" errors when my iPad 2 was connected to my Dell monitors USB hub.  I should mention that my iPhone 4 running iOS 5 has no problems being connected to my Dell monitors USB hub.  I tried all the suggestions that Apple has on their support section.  Restarting the Apple Mobile Device service, Uninstalling the bad USB device under the Device Manager in Windows and rescanning for devices, un-installing and then reinstalling iTunes 10.5 and the other Apple software etc... etc... Windows still could not find the correct USB driver and couldn't recognize the device.  Nothing worked or when it did it only lasted for a very short time.  One of the 4 ports on my Dell finally installed the correct drivers but then it stopped working.


The solution was for me to use the built in USB ports that are on my PC itself.  After I did that, Windows has no issues installing the proper driver for my iPad 2 and seeing it once I used the PC's USB ports.


For more detail see this post on the forums here...

Intel Core i7 920 based PC, Windows 7, 64-bit version of Windows 7
  • DavidSch Level 1 (0 points)

    This fixed my problem with my iPad 1, thanks a lot! Oddly enough, the problem didn't exist when syncing my iPhone 4, only the iPad. I was also using a hub built into a Dell monitor and Windows 7 64-bit

  • Dark Fiber Level 1 (25 points)

    Glad it was helpfull.

  • phixson Level 1 (0 points)

    Thanks much. You saved me running through all the trouble shooting crap before eliminating the hub. You wouldn't happen to know a fix for the Logitech keyboard controls not working problem, would you? Also, I was able to connect through the Dell monitor, once the iPad had connected through the main USB port once.

  • iPodFanaticOct06 Level 1 (0 points)

    Thanks for reply. Same exact problem with me. I'll try hooking into port on CPU.

  • iPodFanaticOct06 Level 1 (0 points)

    That fixed it for me. I plugged into USB that comes out of the top of my Dell tower. It's made for easy access.

  • flustratedinmarietta Level 1 (0 points)

    I wnat to thank yyou all - found this post after several hours of problems upgrading to 5.0. Changed to a USB port in the back of my PC and all seems to be working now.

  • mkiitmr2 Level 1 (0 points)

    Thank you for the suggestion.  It does work on my computer directly.  However it sure would be ideal to fix the usb hub so that it will work.

  • Peirce012 Level 1 (0 points)

    That was my problem - the USB hub. Connected directly to USB hub and started the install.

  • Peirce012 Level 1 (0 points)

    Me too

  • DesertTalk Level 1 (0 points)

    Thanks this fixed my problem too.  I was unable to update my iPad 1 on my Windows 7 machine.  I received multiple errors including error 1611 and -35.  Windows indicated  that the USB device attached had malfunctioned.  I was finally able to upgrade my iPad to IOS 5 on my Mac but was not able to sync the iPad with my PC.  Once I connected the USB Port directly into my Windows 7 machine, it was able to connect and sync.  Connecting my iPad and iPhone to my PC has been flakey on an ongoing basis.  I will connect them directly for now.  This is a bug Apple should address.

  • iPodFanaticOct06 Level 1 (0 points)

    Yes, Apple has caused people to go through massive panic, anxiety and wasted time by not coming out and telling us about this problem. They must know about it. How can we tell them? Now I understand why it took me 50 tries to upgrade to OS5. We all got the same crazy errors that caused us to reinstall iTunes, turn off our firewalls, buy new USB cables and basically waste tons of time and energy, when the solution was very simple. Plug your device into a USB port on your computer.


    After years of using a peripheral USB hub successfully it's no wonder we all started freaking out and thinking it was a major problem. Yes, I'm blowing off some steam, but I've been an Apple fanatic for a long time and I'm not happy about their lack of response to this issue.

  • sutheppd Level 1 (0 points)

    I had the same problem. I fixed it by keep  plugging in the iPad to the intended USB hub while shutting down the windows. Then I started the windows again and this time the windows will recognize and install the proper driver for the upgraded iPad2 to iOS5.

  • mecrick Level 1 (0 points)

    UGHHHHHH. Unbelievable. Please fix this Apple.

  • mkiitmr2 Level 1 (0 points)

    I found I was able to get around it too in a different way.  I found if you disable the usb hub device in device manager, plug in your iphone or ipad while it is disabled, then enable the usb hub in device manager it works fine.  So I actually ended up writing a little script with an icon on my desktop that I just double click when I connect the iphone and it quickly disables and reenables it for me. I am still not exactly happy with this solution either.

Previous 1 2 Next