Updating a device to iOS 11.2 breaks support with Xcode 9.1

Question

I tried to run my app on a device running iOS 11.2 and received the following error:

Could not locate device supported files.

Answer 1

For the rookies like me, if you get a message similar to this:

"This iPhone 6 is running iOS 11.2.X, which may not be supported by this version of Xcode."

It means you have to update Xcode.

I hit this problem when my phone was running 11.2.6 and I was running Xcode Version 9.0

You can update it from App Store or just download it here: https://download.developer.apple.com/Developer_Tools/Xcode_9.2/Xcode_9.2.xip