低版本Xcode 出现could not find developer disk image问题

解决Xcode在ipad/iphone9.2系统真机测试时出现could not find developer disk image问题，只要拷贝这个文件（链接: http://pan.baidu.com/s/1eRsW3vW 密码: 27s7）到/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport