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Editorial Team
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Asked: 2026-05-18T21:42:29+00:00

i have download Xcode SDK 4.2(xcode_3.2.5_and_ios_sdk_4.2_final.dmg) from Apple developer site and installed successfully .

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i have download Xcode SDK 4.2(xcode_3.2.5_and_ios_sdk_4.2_final.dmg) from Apple developer site and installed successfully . when open my old xcode project it shows baseSDk missing ,when i try to change project setting ,i have found and set base SDk as 4.2 it works fine

 my problem is ,in Base SDk list it shows

(iOS 2.1, iOS 2.2, iOS 2.2.1, iOS 3.0, iOS 3.1, iOS 3.1.2, iOS 3.1.3, iOS 4.2)

There is no iOS 4.0 and iOS 4.1 (which i have used before 4.2). anything wrong in my installation???? Plz help me to correct my mistake

Thanks in advance

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1 Answer

  1. Editorial Team

    This does happen. I generally just use the latest SDK as base SDK. You support the latest version and forget abt the older versions[apple style]. This way your app can take advantage of all the latest functionality.

    One thing you must remember is that the Base SDK is different from the deployment target.
    base SDK is the latest SDK your project will use and support.
    deployment target is found in target->getInfo; this is the minimum version that your app will support.
    4.2 is a free upgrade and most of them would upgrade, so i’d set the deployment target as 4.0 or at the least 3.0. who uses 2.x anymore?

    if you really want 4.0 and 4.1 as well, you have to install the old 4.1 GM as a parallel Xcode IDE or follow this link and get support for all the versions in a single XCode IDE.

    http://chris-fletcher.com/2010/08/28/howto-install-iphone-sdk-2-0-3-1-for-xcode-3-2/

    I’d suggest building using 4.2 but follow the link and install all the simulator SDKs for old versions so that you can test the app on those versions of the simulator.

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