Whilst trying to update my daughter’s iPod 4 to iOS5 I had the following error:
An error occured while backing up this iPod(-5000). Would you like to continue to update this iPod?
Continuing will result in the loss of all contents on this iPod.
That doesn’t sound good… I then remembered that we have restrictions enabled on this iPod as my daughter is only 6 so no internet, app store, etc. I disabled restrictions and tried again and it has worked fine this time. The only other thing I did was close any open apps. I don’t know, perhaps turning the iPod off and on again would have had the same result, but this worked ok here.