Syncing iPhone to a new computer?

I've followed all the steps that were on http://osxdaily.com/2012/02/29/sync-iphone-new-computer-without-losing-data/ to sync my Iphone to another computer, i've moved all my stuff over to my new computer but when i connect my iphone it says it couldn't be read and that i need to restore it. Does anyone know how to solve this problem?

In iTunes on the new computer, have you set up your Apple account and authorized the computer?

Try following instructions in this user tip on Apple support
https://discussions.apple.com/...s/DOC-3141

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