IPSW Downloads

macOS 11.3.1 - 20E241 for iMac

This firmware is signed. This means that you can restore to it in iTunes.

Release Date03 May 2021
Upload Date27 April 2021
File NameUniversalMac_11.3.1_20E241_Restore.ipsw
File Size12.98 GB
SHA256sum0ed07e6e1c0401f9e81f8f3a649466c40c5521ac9296f4cac9962e425ed84dfe
MD5sum6659d47f890423c8ca043a771042c097
SHA1sume6fd12bda1fd7267cad0c8189b00210ac4009a60
IdentifieriMac21,2

Installation Instructions

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Connect your iMac to your PC.
  3. Open iTunes and navigate to your iMac.
  4. Hold the Shift key and click "Restore".
  5. Select the UniversalMac_11.3.1_20E241_Restore.ipsw file you downloaded.
  6. Wait for the restore to complete and for your iMac to reboot.

macOS

  1. Connect your iMac to your Mac.
  2. Navigate to your iMac in Finder.
  3. Hold the Option or Alt key and click "Restore".
  4. Select the UniversalMac_11.3.1_20E241_Restore.ipsw file you downloaded.
  5. Wait for the restore to complete and for your iMac to reboot.

Linux

  1. Install idevicerestore.
  2. Connect your iMac to your PC.
  3. Open a terminal and navigate to the IPSW file you downloaded, e.g., cd ~/Downloads.
  4. To perform a full erase restore, type idevicerestore -e UniversalMac_11.3.1_20E241_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iMac to reboot.