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Home/ Questions/Q 1021519
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Editorial Team
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Editorial Team
Asked: May 16, 20262026-05-16T11:19:23+00:00 2026-05-16T11:19:23+00:00

I upgraded to XCode 3.2.3 recently, and now, I see i can’t set a

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I upgraded to XCode 3.2.3 recently, and now, I see i can’t set a base SDK to a previous version. How do I build to allow my app to run on 3.1.3 now?

I am in a serious bind, because I committed to delivering to 3.1.3. 🙁

I tried going to look for the 3.1 SDK on the Apple Developer Program site, but all i see is iOS 4.0 and iOS SDK Beta.

Any thanks would be greatly appreciated!

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  1. Editorial Team
    Editorial Team
    2026-05-16T11:19:24+00:00Added an answer on May 16, 2026 at 11:19 am

    1) Open the Project Settings (Make sure “All Configurations” is set)
    – Project -> Edit Project Settings

    2) Find “Base SDK”, it is found in the “Architectures” category and set it to “iPhone Device 4.0”.

    3) Find “iPhone OS Deployment Target”, it is found in the “Deployment” category and set it to “iPhone OS 3.1.3”.

    • Ensure the same settings for your target
    • Project -> “Edit Active Target” (then follow the same steps)
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