Can't backup my iphone after itunes 10.5 update

Aaargh, since I updated itunes to 10.5 on sunday, I got some issues with either itunes or the iphone - can't tell which one is the problem. The update took 4 hours but seemed to work but now the iphone is not recognized as a device and its impossible for me to update to ios 5 😟 Automated update process is interrupted by the alert " can't backup", manual backup is not working either since itunes seems to "hang".

iPhone 4, Windows Vista

Posted on Oct 18, 2011 2:46 PM

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8 replies

Oct 23, 2011 12:16 PM in response to karamelais

Same problem here. Since upgrading iTunes to 10.5 I cannot upgrade iphone4 to ios5 because iTunes hangs during backup, whether I am attempting to sync or fully upgrade to ios5. Multiple attempts failed. Leaving it overnight failed. Not seeing any solutions to this posted anywhere in this forum. May just be a matter of waiting and trying again later (like a week later). I want ios5 but cannot accept a bricked phone in the process.

Oct 28, 2011 11:04 AM in response to syed_afnan

This solution totally worked for me:


This solution has been documented on this forum by several people, but the solution is usually deep in multiple threads. I really don't know who came up with it first, but it does indeed work.


I had an issue with iTunes.exe, APSDaemon, and AppleMobileDeviceHelper.exe using 100% CPU per core. (Showed as 25% in Task Manager.)


I could not backup my iPhone and the CPU spike happened as soon as iTunes 10.5 was started on Windows 7 Home Premium x64.


This solved it.


Sounds stupid but works:


1. Quit iTunes.

2. Start an elevated command prompt (Start Menu -> All Programs -> Accessories -> Right Click "Command Prompt" -> "Run as Administrator")

3. Once in the command prompt, type "netsh winsock reset" and hit ENTER.

4. Reboot your machine.

5. Restart iTunes.

6. ???

7. Profit!

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Can't backup my iphone after itunes 10.5 update

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