In my case, I copied the 13.3, 13.4, and 13.5 folders from Xcode 11.4.1 into my 11.3.1 App. Copy the support folders you need into the above folder on your computer. I can build my project against older iOS versions by launching old Xcode.

XIP format, extract the contents, resulting in an Xcode.app package, and open the Xcode.app package contents. 24 I have multiple versions of Xcode installed.

To get the right device support file, you can download the latest Xcode package from in. In my case, the Xcode 11.3.1 atform folder contained subfolders containing support files for all iOS versions from version 8.0 up to 13.2. (hint: To open the Xcode.app package in Finder, right-click on Xcode.app, and Show Package Contents in the context menu) The support files go into the following folder: /Applications/Xcode.app/Contents/Developer/Platforms/atform Rather than updating Xcode, the solution is to install the device support files. When running an app on the iPhone (rather than the simulator) in this situation, Xcode displayed an error, saying it could not locate device support files, a spinner, and only an option to Cancel Running: I recently ran into a situation where I wanted to hold off upgrading to MacOS 10.15 (Catalina) but needed to develop and test on my iPhone XS running iOS 13.5, which requires Xcode 10.4 that only runs on Catalina.

Xcode older versions