iOS SDK Archive

iPhoneOS SDKs are included in Xcode, Wikipedia provides a table about Xcode and bundled SDKs.

To download old versions of iPhoneOS SDKs, you need to download Xcode from:

I’ve uploaded some to

iOS 8.4 from Xcode 6.4
iOS 9.3 from Xcode 7.3.1
iOS 10.2 from Xcode 8.2.1
iOS 10.3 from Xcode 8.3.2
iOS 11.0 from Xcode 9.0.1
iOS 11.1 from Xcode 9.1

to download
Enter ‘’ as both user and password.

to install

iOS SDK Archive by @sskaje: