Download iPadOS 11.2.1 Build 15C153 IPSW Firmware Restore Files
Download the IPSW iPadOS 11.2.1 (Build 15C153) firmware file released at 13 December 2017 intended to restore iPad Pro 2 (12.9-inch, Cellular) via iTunes. IPSW iPadOS 11.2.1 build 15C153 is unsigned by Apple to update Apple device software.