HT4972 why am i getting an error -48 when updating to iOS5 on my iPad

Question

why am i getting an error -48 when updating to iOS5 on my iPad and how do I fix it? Apple's suggestion does not work.

Answer 1

I'm sorry but I don't what the error means other than the ipsw file is bad - which is what it says in the article and it usually relates to something in the specific user account.
You did try creating a new user account on the Mac and tried updating that way? You have no security software running on the Mac?
The app that was downloaded using your son's ID should not affect the update to the best of my knowledge.
jparrsies wrote:
On a related question, I would not care so much if i could make a good backup and not have the upgrade overwrite this backup.  Once I start the upgrade, iTunes thinks I've never done a successful backup of the iPad and yet I've done at least a dozen over time.
I'm not sure I understand what you mean here by "iTunes thinks I've never done a successful backup". Are you trying to do a manual backup?