Download iPadOS 11.3.1 Build 15E302 IPSW Firmware Restore Files
Download the IPSW iPadOS 11.3.1 (Build 15E302) firmware file released at 24 April 2018 intended to restore iPad Air 2 (WiFi) via iTunes. IPSW iPadOS 11.3.1 build 15E302 is unsigned by Apple to update Apple device software.
