iOS 26.3.1 (23D8133) for iPhone 17 Pro Max

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iPhone 17 Pro Max

✗ This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore.

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Download (10 GiB)

This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore. The instructions below are included for reference only.

Windows

  1. Install the latest version of Apple Devices from the Microsoft Store.
  2. Plug your iPhone 17 Pro Max in to your PC.
  3. Open Apple Devices, and navigate to your iPhone 17 Pro Max.
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone18,2_26.3.1_23D8133_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone 17 Pro Max to reboot.

macOS

  1. Plug your iPhone 17 Pro Max in to your Mac.
  2. Navigate to your iPhone 17 Pro Max in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone18,2_26.3.1_23D8133_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone 17 Pro Max to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 17 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 iPhone18,2_26.3.1_23D8133_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 17 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 iPhone18,2_26.3.1_23D8133_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 91e56c4620ec6f1a878cc7dc68157a96a21a1fe0. 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 iPhone18,2_26.3.1_23D8133_Restore.ipsw
  3. The output of the command should match the following checksum: 91e56c4620ec6f1a878cc7dc68157a96a21a1fe0. 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 iPhone18,2_26.3.1_23D8133_Restore.ipsw
  3. The output of the command should match the following checksum: 91e56c4620ec6f1a878cc7dc68157a96a21a1fe0. If it doesn't, you may need to redownload the file.

Checksums

SHA256sumb76c889d9aada7859a181848fbc04fc9a35f1f946b82e9ea7f081a034bcaa741
MD5sumb76c889d9aada7859a181848fbc04fc9a35f1f946b82e9ea7f081a034bcaa741
SHA1sum91e56c4620ec6f1a878cc7dc68157a96a21a1fe0
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

This update provides bug fixes for your iPhone

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

https://support.apple.com/100100

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