Cannot deploy application on iPOD - "Your device has an old version of the Developer Disk Image mounted"?

I am trying to deploy my XCode project to my iPod touch for the first time.

• I successfully created a provisioning profile and installed in XCode.
• I installed latest XCode 4.(downloaded from Apple site yesterday )
• I upgraded my iPod software to latest (4.3.5)
• I rebooted the iPod 开发者_如何学编程as it asks,but nothing happened.

But XCode showing following error

Any tips?

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Ok..if anyone bump into this problem. Just copy existing Developer Library folder with the version number in the device.(In my case I copied 4.3 folder as "4.3.5 (8L1)"