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MacBook Pro (M1 Max, 14-inch, 2021)

macOS 13.3.1 (22E261) for MacBook Pro (M1 Max, 14-inch, 2021)

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

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Download (12.7 GB)

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Plug your MacBook Pro (M1 Max, 14-inch, 2021) in to your PC.
  3. Open iTunes, and navigate to your MacBook Pro (M1 Max, 14-inch, 2021).
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the UniversalMac_13.3.1_22E261_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the MacBook Pro (M1 Max, 14-inch, 2021) to reboot.

macOS

  1. Plug your MacBook Pro (M1 Max, 14-inch, 2021) in to your Mac.
  2. Navigate to your MacBook Pro (M1 Max, 14-inch, 2021) in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the UniversalMac_13.3.1_22E261_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the MacBook Pro (M1 Max, 14-inch, 2021) to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your MacBook Pro (M1 Max, 14-inch, 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_13.3.1_22E261_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the MacBook Pro (M1 Max, 14-inch, 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_13.3.1_22E261_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: e8e862f31c6390f5d66c37139dc84493639e14d0. 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_13.3.1_22E261_Restore.ipsw
  3. The output of the command should match the following checksum: e8e862f31c6390f5d66c37139dc84493639e14d0. 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_13.3.1_22E261_Restore.ipsw
  3. The output of the command should match the following checksum: e8e862f31c6390f5d66c37139dc84493639e14d0. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum 6e9d9b30528ec951d8a377173b355932647194c326347efc5e54ade1fe71cbc8
MD5sum 238108a4bf8e47b387af0d784680c370
SHA1sum e8e862f31c6390f5d66c37139dc84493639e14d0
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