Download iOS 8.1.2 Build 12B440 IPSW Firmware Restore Files
Download the IPSW iOS 8.1.2 (Build 12B440) firmware file released at 09 December 2014 intended to restore iPhone 5s (Global) via iTunes. IPSW iOS 8.1.2 build 12B440 is unsigned by Apple to update Apple device software.