USB Device Not Recognized, unknown device
I'm trying to download photos, and update my itunes, but my computer is not recognizing my device, anymore. It doesn't work on any computer, so it has to be the phone.
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Greg, start with these steps that are listed by Apple right here and here. Let us know if any of this is working (or not). Make sure that your dock connector is clean, that the pins are not bend, broken or corroded.
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+usually the dirty pin devil.
This work's for me every-time,turn off your pc then unplug-it from the wall wait about one min. plug it back in restart it, I know it sound's dumb ,but it work's for me.
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usb not recognized unknown device problum
Update
usb not recognized unknown device problum
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Have you checked the links in the original answer? what have you tried?
The iPhone I am working on has had the dock replace and the battery. The battery was replaced because it would not hold a charge, then when I connected to my computer I would receive the follow error message "one of the USB devices attached to this computer has malfunctioned and Windows does not recognize it”. I then replaced the dock and I am still receiving the same message. The 3 other iPhones I have connect to the computer with no problems, so I know it is not the computer. I am leaning toward the system board being bad, but I am not sure if this is true or not. Any help would be appreciated.
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I had the same prob guys. I changed the charger port. google it and do it carefully, or go to the repairer near you and ask him to change the charger port.
p.s: I use an iph 4s
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were you able to try it with another usb cable?
tony tony 의