XCode 4 和 iOS 4.2.1
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XCode 4 and iOS 4.2.1
提问by Chris
I've installed XCode4 and I need to build for iOS 4.2.1 is there a possibility to install the "old" firmware 4.2.1 and build against it?
我已经安装了 XCode4，我需要为 iOS 4.2.1 构建是否有可能安装“旧”固件 4.2.1 并针对它进行构建？
采纳答案by Tomasz Stanczak
As far as I understand it you can only use a 4.3 Base SDK but can target also older OSes like 4.2.1 or whatever. So no need to install old firmwares.
据我了解，您只能使用 4.3 Base SDK，但也可以针对较旧的操作系统，例如 4.2.1 或其他版本。因此无需安装旧固件。
Actually it wouldn't make sense any other way. I have a older iPod Touch which can only be upgraded to 4.2.1, so it has to be programmed targeted for 4.2.1 using the same toolset.
实际上，其他任何方式都没有任何意义。我有一个旧的 iPod Touch，它只能升级到 4.2.1，所以它必须使用相同的工具集针对 4.2.1 进行编程。
