Download iPadOS 11.1.1 Build 15B150 IPSW Firmware Restore Files
Download the IPSW iPadOS 11.1.1 (Build 15B150) firmware file released at 09 November 2017 intended to restore iPad Pro 12.9-inch (Cellular) via iTunes. IPSW iPadOS 11.1.1 build 15B150 is unsigned by Apple to update Apple device software.