Download iOS 11.0.2 Build 15A421 IPSW Firmware Restore Files
Download the IPSW iOS 11.0.2 (Build 15A421) firmware file released at 03 October 2017 intended to restore iPhone 5s (Global) via iTunes. IPSW iOS 11.0.2 build 15A421 is unsigned by Apple to update Apple device software.