Download iPadOS 12.1.3 Build 16D39 IPSW Firmware Restore Files
Download the IPSW iPadOS 12.1.3 (Build 16D39) firmware file released at 22 January 2019 intended to restore iPad Air (WiFi) via iTunes. IPSW iPadOS 12.1.3 build 16D39 is unsigned by Apple to update Apple device software.