iOS 26.3.1 (23D8133) for iPhone 17 Pro

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iPhone 17 Pro

✓ This firmware is signed. This means that you can restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore.

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

Download (10 GiB)

Windows

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

macOS

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

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 17 Pro 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 iPhone18,1_26.3.1_23D8133_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 17 Pro to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPhone18,1_26.3.1_23D8133_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: c574282d8088216fa110c98356b8099d1e415273. 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 iPhone18,1_26.3.1_23D8133_Restore.ipsw
  3. The output of the command should match the following checksum: c574282d8088216fa110c98356b8099d1e415273. 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 iPhone18,1_26.3.1_23D8133_Restore.ipsw
  3. The output of the command should match the following checksum: c574282d8088216fa110c98356b8099d1e415273. If it doesn't, you may need to redownload the file.

Checksums

SHA256suma3d38406af21b2212304d235744d56666a9c054149792d9837d1795890d0f832
MD5suma3d38406af21b2212304d235744d56666a9c054149792d9837d1795890d0f832
SHA1sumc574282d8088216fa110c98356b8099d1e415273
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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