Need Transitioning Help from iOS SDK 4 to 5

can you still build applications you made from SDK 4 to an updated iOS 5 device? 开发者_开发技巧without having to update to the beta version of XCode (4.2)?

Or maybe, Will it be okay also if I will just have two versions of XCode?

Thanks

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You need to update to Xcode 4.2 to get the latest version of the iOS SDK. I'm not sure if you can use the iOS 5 SDK with Xcode 4.1; maybe if you update your compiler to clang 3.0.

Of course, you can always run iOS 4 apps on iOS 5 devices.