Problem downloading iPhone/iOS upgrade, iTunes complains: "You do not have enough access privileges for this operation"
I found a fix on the Apple Discussions board:


Go to ~/Library/ (i.e. open your home directory, then select the Library folder)
Get Info (click File -> Get Info or type ⌘I)
If possible, make sure the lock at the bottom right corner of the Get Info window is unlocked
Make sure the Sharing &amp; Permissions: section is visible
Where it says "Username (me)" make sure the privilege is set to Read &amp; Write
In the little tool/wheel pulldown right below, select Apply to enclosed items (say yes, if it asks you if you know it can't be undone)
Try the upgrade again


This worked for me. Hope it helps!