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MacBook Air (M1, Late 2020)

macOS 15.3.1 (24D70) for MacBook Air (M1, Late 2020)

✓ 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 MacBook Air (M1, Late 2020) in to your PC.
  3. Open iTunes, and navigate to your MacBook Air (M1, Late 2020).
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the UniversalMac_15.3.1_24D70_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the MacBook Air (M1, Late 2020) to reboot.

macOS

  1. Plug your MacBook Air (M1, Late 2020) in to your Mac.
  2. Navigate to your MacBook Air (M1, Late 2020) in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the UniversalMac_15.3.1_24D70_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the MacBook Air (M1, Late 2020) to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your MacBook Air (M1, Late 2020) 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_15.3.1_24D70_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the MacBook Air (M1, Late 2020) to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash UniversalMac_15.3.1_24D70_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: c2b5bca53c6cf475e7a2a0b6d6c0db19477d69eb. 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_15.3.1_24D70_Restore.ipsw
  3. The output of the command should match the following checksum: c2b5bca53c6cf475e7a2a0b6d6c0db19477d69eb. 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_15.3.1_24D70_Restore.ipsw
  3. The output of the command should match the following checksum: c2b5bca53c6cf475e7a2a0b6d6c0db19477d69eb. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum 559a78b75adc6bec77665b17db0e166eba326b04fc534e2a086253be92e043b0
MD5sum 8bf666a8d89382b396a55d02594144eb
SHA1sum c2b5bca53c6cf475e7a2a0b6d6c0db19477d69eb
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