Xcode fails to Build on real iOS device running iOS 13

Question

I'm currently updated my iPhone XS Max to iOS 13.0.17A5492t Beta version.

My mac running on Mac OS Catalina and Xcode is on latest stable version not beta >> Version 10.2.1 (10E1001).

When i try to build my apps on my real device i get this compile error:

This iPhone XS Max is running iOS 13.0 (17A5492t), which may not be supported by this version of Xcode.

What i've done

1. Download iOS 13.0 Developer Disk Image from repo.
2. Pasted in /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport
3. Restart Xcode

but none of above worked.

Answer 1

your step by step manual you performed actually helped me and now I can work with iOs 13 with xcode 10.2.1. There is only difference, that I downloaded device support files from this github, so you can try this. And I restarted whole mac to be sure:)