Device not recognized via USB

Question

Device not recognized via USB

Hi, i have iPad1 fw4.3 that is out of warranty now. It worked fine.

Suddenly neither windows 7 nor lion would recognize it when connected with usb.

Windows 7 throws "USB device not recognized" message, Lion does nothing.

Im aware of many threads on this subject but nothing helped.

As i'm a game developer i need ipad to test my games, and without usb connection it is useless to me.

I cant afford another one so it's quite important to me.

I'm also form a country not supporded by apple so there is no place where i could take it for service.

iPad is charging fine and works fine.

It shows like "Unknown device" under windows device manager.

Not detected even in Recovery mode, so i cant restore. Any other way to update fw ?

Tried with 3 different cables that work with two ipods on every usb port.

Tried on 3 different windows 7 pcs.

Tried with a fresh install of lion.

Tried leaving all devices unplugged for some time.

Tried disabling network adapters everywhere.

Tried reinstalling itunes, deleting plists and kexts multiple times.

Any thoughts ? Thanks

iPad, iOS 4.3.1

Posted on Dec 19, 2011 5:19 AM

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Answer 1

Diavonex

Level 9

67,217 points

Dec 19, 2011 5:34 AM in response to nikolafrombelgrade

This might help:

http://support.apple.com/kb/TS1538

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Answer 2

Dec 19, 2011 6:11 AM in response to Diavonex

I tried that first but it didnt help. What i havent tried is go to:

Settings > General > Reset All Settings

That works but only after 2-5+ tries. Both lion and win7 detect it.

However while it is detected the device is often disconnected by itself after 20 seconds or more.

Also after restarting OS device is not detected.

At least now i know its not a hardware problem.

This is not a solution because i cant do anything in the 20seconds the device is connected.

So i still need help ;D

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Answer 3

Dec 19, 2011 7:16 PM in response to nikolafrombelgrade

Now multiple resets dont do anything. Somethimes ipad is shown i task manager as "Apple iPad" and most of the time as "Apple mobile device usb driver". When on lion, somethimes the ipad says 'not charging'. Alo deleted everything on the ipad by hand as complete erase doesnt work ?

Any ideas ? Should i try to DFU mode, im afraid i might get stuck in it ?

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Answer 4

Dec 21, 2011 6:40 PM in response to nikolafrombelgrade

Update for those interested with similar problem.

Tried DFU, wasnt detected in it also.

Not sure but it seams it is detected when i do a settings reset > connect to a wifi network > do a settings reset

But when its detected it always disconnect itself after 5-10 second unless i do something with it. Its like it disconnects after a 5sec idle.

So, as soon its detected and itunes shows up i start backup to give the device something to do.

That gave me enough time to select ios5 ipsw, itunes to unack it and start the update.

The update went fine, ipad didnt disconnect itself during the procedure.

Unfortunately even though im on ios5 and did full erase the problem persists :/

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