Download iPadOS 11.3 Build 15E216 IPSW Firmware Restore Files
Download the IPSW iPadOS 11.3 (Build 15E216) firmware file released at 28 March 2018 intended to restore iPad 6 (WiFi) via iTunes. IPSW iPadOS 11.3 build 15E216 is unsigned by Apple to update Apple device software.