Download iOS 12.1.1 Build 16C50 IPSW Firmware Restore Files
Download the IPSW iOS 12.1.1 (Build 16C50) firmware file released at 05 December 2018 intended to restore iPhone 8 Plus (Global) via iTunes. IPSW iOS 12.1.1 build 16C50 is unsigned by Apple to update Apple device software.