You could follow these steps:
- You have to download “device support files for the iOS” from here,
And if you need any other “device support files for the iOS” you could download from here,
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Thin unzip it,
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Then go to your application folder,
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Right-click on the Xcode-Beta.app and choose Show Package Contents,
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Navigate to Contents->Developer->Platforms->iPhoneOS.platform->DeviceSupport,
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Then paste the file you downlaod in it.
Other resource.