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

macOS 13.5.1 (22G90) for iMac 24-inch (M1, Two Ports, 2021)

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

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Download (12.9 GB)

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Plug your iMac 24-inch (M1, Two Ports, 2021) in to your PC.
  3. Open iTunes, and navigate to your iMac 24-inch (M1, Two Ports, 2021).
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the UniversalMac_13.5.1_22G90_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iMac 24-inch (M1, Two Ports, 2021) to reboot.

macOS

  1. Plug your iMac 24-inch (M1, Two Ports, 2021) in to your Mac.
  2. Navigate to your iMac 24-inch (M1, Two Ports, 2021) in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the UniversalMac_13.5.1_22G90_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iMac 24-inch (M1, Two Ports, 2021) to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iMac 24-inch (M1, Two 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_13.5.1_22G90_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iMac 24-inch (M1, Two 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_13.5.1_22G90_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 206a5a4b3bd80852ea1789e27e5764a56b9b11e2. 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_13.5.1_22G90_Restore.ipsw
  3. The output of the command should match the following checksum: 206a5a4b3bd80852ea1789e27e5764a56b9b11e2. 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_13.5.1_22G90_Restore.ipsw
  3. The output of the command should match the following checksum: 206a5a4b3bd80852ea1789e27e5764a56b9b11e2. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum b16966311b54aa5249cd2ee909e9854e0923c3f850e29b050614537d7abe657e
MD5sum 91ba142e818d5bab5350b3cac70b0c9a
SHA1sum 206a5a4b3bd80852ea1789e27e5764a56b9b11e2
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