How to develop iOS 10.3.x apps in Xcode 8.2.x

Published 2017-07-10, 18:44

If you work on an older version of Mac OS, for example because Apple decided your Macbook is to old to upgrade to a recent version, you might be stuck with Xcode 8.2.x to develop and test your iOS apps. Unfortunately this can lead to this nice error message if you made the mistake to upgrade your iPhone to iOS 10.3:

Could not locate device support files
This iPhone 6s is running iOS 10.3.1 (14E304), which may not be supported by this version of Xcode.

This is because the old Xcode doesn’t get these „device support files“ via updates any more. Luckily the internet is here to rescue you.

Download https://www.dropbox.com/s/i1f7q8w3vgr2ozl/10.3%20%2814E269%29.zip?dl=0 and extract it

Click on „Finder“ in MAC OS

Click on „Go to Folder“

Paste this path:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport

Paste your extracted „10.3 (14E269)“ directory to that place.

Quit Xcode and restart it (and maybe the whole Mac).

You can now run your projects successfully on your real device again.

Adapted from source: https://gist.github.com/steipete/d9b44d8e9f341e81414e86d7ff8fb62d#gistcomment-2041802