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iPhone 12 Pro Max

iOS 18.3.1 (22D72) for iPhone 12 Pro Max

✗ This firmware is not signed. This means you cannot restore to it in iTunes.

Your download should begin shortly. If it does not, you can download it directly here:

Download (8.8 GB)

✗ This firmware is not signed. This means you cannot restore to it in iTunes. The instructions below are included for reference only.

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Plug your iPhone 12 Pro Max in to your PC.
  3. Open iTunes, and navigate to your iPhone 12 Pro Max.
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone13,4_18.3.1_22D72_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone 12 Pro Max to reboot.

macOS

  1. Plug your iPhone 12 Pro Max in to your Mac.
  2. Navigate to your iPhone 12 Pro Max in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone13,4_18.3.1_22D72_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone 12 Pro Max to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 12 Pro Max 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 iPhone13,4_18.3.1_22D72_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 12 Pro Max to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPhone13,4_18.3.1_22D72_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: a6323558f9a48b737b93ba995a194644b0b755d8. 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 iPhone13,4_18.3.1_22D72_Restore.ipsw
  3. The output of the command should match the following checksum: a6323558f9a48b737b93ba995a194644b0b755d8. 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 iPhone13,4_18.3.1_22D72_Restore.ipsw
  3. The output of the command should match the following checksum: a6323558f9a48b737b93ba995a194644b0b755d8. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum 239198d8681812ebf38c1d4870bf46679f534f750b7a4b32719f3bb0cf27182b
MD5sum 74bf2250b4da03278b5cdb514f562ba7
SHA1sum a6323558f9a48b737b93ba995a194644b0b755d8
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

This update provides important bug fixes and security updates and is recommended for all users.

For information on the security content of Apple software updates, please visit this website:

https://support.apple.com/100100

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