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From: Chris Ridd on 21 Jun 2010 12:38
On 2010-06-21 17:15:51 +0100, Sn!pe said:

> I've just bricked my son's iPod Touch 8GB during a failed update and
> restore. The iPod is stuck with just the Apple logo showing and it isn't
> recognised by Finder or iTunes. I can force it to shut down by holding
> both buttons for ten seconds and I can put it into recovery mode by
> connecting the cable while holding the bottom button; iTunes can then
> see the iPod. When I then try to restore the iPod, iTunes downloads a
> new copy of the software, fiddles with it, then complains about unknown
> error (20).
>
> I've tried this on both my iMac and my Macbook Pro, both fully updated
> and using brand new test user accounts. Any suggestions, please? before
> I offer to replace it for him (fortunately I have his data backed up).

Does putting it into recovery mode help? <http://support.apple.com/kb/HT1808>
--
Chris

From: Chris Ridd on 21 Jun 2010 13:02
On 2010-06-21 17:46:47 +0100, Sn!pe said:

> Chris Ridd <chrisridd(a)mac.com> wrote:
>
>> On 2010-06-21 17:15:51 +0100, Sn!pe said:
>>
>>> I've just bricked my son's iPod Touch 8GB during a failed update and
>>> restore. The iPod is stuck with just the Apple logo showing and it isn't
>>> recognised by Finder or iTunes. I can force it to shut down by holding
>>> both buttons for ten seconds and I can put it into recovery mode by
>>> connecting the cable while holding the bottom button; iTunes can then
>>> see the iPod. When I then try to restore the iPod, iTunes downloads a
>>> new copy of the software, fiddles with it, then complains about unknown
>>> error (20).
>>>
>>> I've tried this on both my iMac and my Macbook Pro, both fully updated
>>> and using brand new test user accounts. Any suggestions, please? before
>>> I offer to replace it for him (fortunately I have his data backed up).
>>
>> Does putting it into recovery mode help? <http://support.apple.com/kb/HT1808>
>
> Unfortunately not; although iTunes sees the iPod in recovery mode,
> restoring barfs after the download with error 20.

Oops, I missed that you mentioned recovery mode above! Does anything
get logged in /var/log/system.log when you get error 20?
--
Chris

From: Chris Ridd on 21 Jun 2010 13:21
On 2010-06-21 18:16:54 +0100, Sn!pe said:

> Chris Ridd <chrisridd(a)mac.com> wrote:
>
>> Oops, I missed that you mentioned recovery mode above! Does anything
>> get logged in /var/log/system.log when you get error 20?
>
> All I see when I search system.log for "ipod" using Console is a couple
> of crash reports sent to Apple
>
> ----8<-----
> Jun 21 15:41:00 Snimac MDCrashReportTool[337]: Successfully submitted
> the log at /Users/dilke/Library/Logs/iPod Updater Logs/iPodUpdater
> 1.log.plist
> Jun 21 15:41:00 Snimac [0x0-0x17017].com.apple.iTunes[233]: 2010-06-21
> 15:41:00.412 MDCrashReportTool[337:903] Successfully submitted the log
> at /Users/dilke/Library/Logs/iPod Updater Logs/iPodUpdater 1.log.plist
> Jun 21 15:57:22 Snimac MDCrashReportTool[337]: Successfully submitted
> the log at /Users/dilke/Library/Logs/iPod Updater Logs/iPodUpdater
> 3.log.plist
> Jun 21 15:57:22 Snimac [0x0-0x17017].com.apple.iTunes[233]: 2010-06-21
> 15:57:22.794 MDCrashReportTool[337:903] Successfully submitted the log
> at /Users/dilke/Library/Logs/iPod Updater Logs/iPodUpdater 3.log.plist
> ---->8-----
>
> Which I doubt is very helpful? I will freely admit that I'm a bit out of
> my depth when it comes to combing through logs.

You might want to look for "iTunes" instead. Alternatively
AppleMobileBackup is the thing currently doing things to my iPod and
iOS 4, so look for "AppleMobile".
--
Chris

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