Download iOS 8.1.1 Build 12B435 IPSW Firmware Restore Files
Download the IPSW iOS 8.1.1 (Build 12B435) firmware file released at 17 November 2014 intended to restore iPhone 5s (GSM) via iTunes. IPSW iOS 8.1.1 build 12B435 is unsigned by Apple to update Apple device software.