Not too long ago, I bought an iPhone. I had no need for the iPod Touch I had any longer so I restored the iPhone to it's initial settings and then updated the iPod Touch to software version 2.1 before I gave it to my dad. On a recent visit, I tried to plug the iPod Touch into his PC and brought up iTunes on his iMac in an attempt to upgrade the iPod Touch to v2.2. I encountered an error telling me that I wasn't authorized to upgrade the software on his iPod Touch to v2.2. Why is this? Has anyone else encountered this before? How do I get around this?