Download iPadOS 12.3.1 Build 16F203 IPSW Firmware Restore Files
Download the IPSW iPadOS 12.3.1 (Build 16F203) firmware file released at 24 May 2019 intended to restore iPad Air (WiFi) via iTunes. IPSW iPadOS 12.3.1 build 16F203 is unsigned by Apple to update Apple device software.