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 iMac 24-inch (M1, Four Ports, 2021) via iTunes. IPSW MacOS 11.3.1 build 20E241 is signed by Apple to update Apple device software.
