Build for armv6 architecture (target iOS 3.1.3) with iOS 6 SDK and Xcode 4.5?

Question

is there a chance to use the iOS 6 SDK to develop applications that target iOS 3.1.3? If I open my project with the old deployment target, the compiler warns me:

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Answer 1

With Xcode 4.5 (ie iOS 6 SDK) the lowest version you can build for is iOS 4.3. I guess it is time for your 3.1.3 customers to upgrade.