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?

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)"