When I having my iphone 4 need to upgrade to IOS 5. So I just back up with through the iTunes 10.5 and download and installed ios 5. I am now going through all the step-up process and it is at collect or restore all from the iTunes backup step. I attach to iTunes and iTunes is prompting me for a password to "unlock your iPhone backup file." No I did not encrypt the iPhone backup, nor is it or was it checked in iTunes. I have try my iTunes password, my 4 digit unlock code for the iPhone, and a number of other passwords. When I did the backup an hour ago I was not asked for a password. I am at a loss as to what it is.
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