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iMac 24-inch (M1, Four Ports, 2021)

macOS 15.3 (24D60) for iMac 24-inch (M1, Four Ports, 2021)

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

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Download (16.5 GB)

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Plug your iMac 24-inch (M1, Four Ports, 2021) in to your PC.
  3. Open iTunes, and navigate to your iMac 24-inch (M1, Four Ports, 2021).
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the UniversalMac_15.3_24D60_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iMac 24-inch (M1, Four Ports, 2021) to reboot.

macOS

  1. Plug your iMac 24-inch (M1, Four Ports, 2021) in to your Mac.
  2. Navigate to your iMac 24-inch (M1, Four Ports, 2021) in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the UniversalMac_15.3_24D60_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iMac 24-inch (M1, Four Ports, 2021) to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iMac 24-inch (M1, Four Ports, 2021) in to your PC.
  3. Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
  4. To perform a full erase restore, type idevicerestore -e UniversalMac_15.3_24D60_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iMac 24-inch (M1, Four Ports, 2021) to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash UniversalMac_15.3_24D60_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: df74b8a291c1bb83491758d2546d72de1ab6386e. If it doesn't, you may need to redownload the file.

macOS

  1. Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
  2. Type openssl sha1 UniversalMac_15.3_24D60_Restore.ipsw
  3. The output of the command should match the following checksum: df74b8a291c1bb83491758d2546d72de1ab6386e. If it doesn't, you may need to redownload the file.

Linux

  1. Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
  2. Type openssl sha1 UniversalMac_15.3_24D60_Restore.ipsw
  3. The output of the command should match the following checksum: df74b8a291c1bb83491758d2546d72de1ab6386e. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum ea0546c3b323e76c1c902d28c9fda52fe530ff7720d36e03b05bbda8e16e5dbc
MD5sum 6a390ae7e5be0a9e532c1e56321bb2de
SHA1sum df74b8a291c1bb83491758d2546d72de1ab6386e
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