Xcode not detecting my device

I upgraded my iPad device OS version recently to 5.1.1 (9B206). From that my Xcode is not detecting my device. Am just getting iOS Device and simulator options in my Xcode. But am getting my device in older version of Xcode and iTunes. For this i updated my MAC OS version to 10.7.4 and Xcode version to 4.3.3. But still am facing the same problem. Now how to make my Xcode to detect my device?

How do I find my iPhone using Xcode?

Open up a project in Xcode and click on the device near the Run ▶ button at the top left of your Xcode screen. Plug your iPhone into your computer. You can select your device from the top of the list.

This Worked for me.

Quit Xcode.
Disconnect the device.
In a terminal window, type: sudo pkill usbmuxd (it will be restarted again automatically)
Restart Xcode
Connect the device

Your device should now be visible again in Xcode!