Download iPadOS 15.1 Build 19B74 IPSW Firmware Restore Files
Download the IPSW iPadOS 15.1 (Build 19B74) firmware file released at 25 October 2021 intended to restore iPad Air 2 (WiFi) via iTunes. IPSW iPadOS 15.1 build 19B74 is unsigned by Apple to update Apple device software.
