IOS11.1 15b93

11.1(15B93)/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk（提示：要在应用程序中找到Xcode，右键点击->显示包内容，以前Xcode版本的iOSSDK有的保存在系统根目录下）复制一份iPhoneOS.sdk，并命名为iPhoneOS11.1.sdk解压此文件到/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport3、修改SDKSettings.pli