Download MacOS 11.3.1 Build 20E241 IPSW Firmware Restore Files
Download the IPSW MacOS 11.3.1 (Build 20E241) firmware file released at 03 May 2021 intended to restore MacBook Air (M1, Late 2020) via iTunes. IPSW MacOS 11.3.1 build 20E241 is signed by Apple to update Apple device software.
