Download iPadOS 11.1 Build 15B93 IPSW Firmware Restore Files
Download the IPSW iPadOS 11.1 (Build 15B93) firmware file released at 31 October 2017 intended to restore iPad Air 2 (Cellular) via iTunes. IPSW iPadOS 11.1 build 15B93 is unsigned by Apple to update Apple device software.