The version of iPhone OS on “Ticky Iphone”

The version of iPhone OS on “Ticky Iphone” does not match any of the versions of iPhone OS supported for development with this copy of Xcode. Please restore the device to a version of the OS listed below. If necessary, the latest version of Xcode is available here.

OS Installed on Ticky Iphone

3.1.2 (7D11)

Xcode Supported iPhone OS Versions
3.1.1 (7C146)
3.1.1 (7C145)
3.1 (7C144)
3.0.1 (7A400)
3.0
2.2.1
2.2
2.1.1
2.1
2.0.2 (5C1)
2.0.1 (5B108)
2.0 (5A347)
2.0 (5A345)

在/Developer/Platforms/iPhoneOS.platform/DeviceSupport/目錄下，做了一個名字叫做 3.1.2 (7D11) 的Symbolic Link，鏈結到3.1的那個目錄就可以了。

ln -s /Developer/Platforms/iPhoneOS.platform/DeviceSupport/3.1.2\ \(7D11\) /Developer/Platforms/iPhoneOS.platform/DeviceSupport/3.0.1

http://developer.apple.com/iphone/library/qa/qa2009/qa1677.html