Download iOS 12.1.4 Build 16D57 IPSW Firmware Restore Files
Download the IPSW iOS 12.1.4 (Build 16D57) firmware file released at 07 February 2019 intended to restore iPhone 5s (GSM) via iTunes. IPSW iOS 12.1.4 build 16D57 is unsigned by Apple to update Apple device software.