1需要 真机SDK包
15.1 (19B74)
/应用程序/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/
注意如果你机器上有多个xcode的话，要放到对应的xcode包内容里
2 无法安装
Unable to install "APP"
Domain: com.apple.dt.MobileDeviceErrorDomain
Code: -402620375
--
The code signature version is no longer supported.
Domain: com.apple.dt.MobileDeviceErrorDomain
Code: -402620375