If somebody facing similar issue with Xcode 9.1
-
Open directory:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport
-
Create new folder “11.2 (15C107)” (or “10.3 (14E269)” for older versions, depends on what exactly are you missing)
-
Paste files from provided google drive folder
11.2 (15C107)
(or 10.3 (14E269) if you need older files) -
Restart Xcode
For other iOS versions you may check @Sour LeangChhean ‘s answer
Keep in mind, that some day you will need to upgrade your Xcode anyway 🙂