iOS 26.3 (23D127) 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_23D127_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_23D127_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_23D127_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_23D127_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: c7604a6c7e60bb448d98fce94eb4e355df16d831. 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_23D127_Restore.ipsw
  3. The output of the command should match the following checksum: c7604a6c7e60bb448d98fce94eb4e355df16d831. 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_23D127_Restore.ipsw
  3. The output of the command should match the following checksum: c7604a6c7e60bb448d98fce94eb4e355df16d831. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum5b60cba73eded50b5d2254104fbca1b3bbef2cb0c2e7aebe14a18d33b9a78cde
MD5sum5b60cba73eded50b5d2254104fbca1b3bbef2cb0c2e7aebe14a18d33b9a78cde
SHA1sumc7604a6c7e60bb448d98fce94eb4e355df16d831
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.

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

https://support.apple.com/100100

Some features may not be available for all regions. For more information, please visit:

https://www.apple.com/os/ios

Software updates, like this one, add new features and improvements that may affect performance and/or battery life. To learn more, please visit:

https://support.apple.com/125039

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