Sync iphone 4s with ituns

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Dear Skyz,

I still haven't jb my iphone 4s 5.1.1 206b.

When i tried to sync my phone with itunes, all the apps I downloaded to the iphone via apple store could not be sync to itunes. It said they had not been authorized to use in this computer.

I then went to tab store..then..authorize this computer...i even click the transfer purchase as was suggested in some forum. But i still got the same error. All the apps in my iphone could not sync to my computer.

My friend, what's wrong and what should i do.

Thanks.