Aa fazer o upload para a APPLESTORE recebi essa mensagem: ERROR ITMS-90725: "SDK Version Issue. This app was built with the iOS 11.2 SDK. All iOS apps submitted to the App Store must be built with the iOS 11 SDK or later, included in Xcode 9 or later. Further, starting March 2019, all iOS apps submitted to the App Store must be built with the iOS 12.1 SDK or later, included in Xcode 10.1 or later."
Meu xcode z: 9.2 (versao maxima compativel) Meu ios: 10.12.6
Como resolver essa compatibilidade?