iOS 26.5.1 (23F81) 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_26.5.1_23F81_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_26.5.1_23F81_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_26.5.1_23F81_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_26.5.1_23F81_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: ae3500d9b177a3712328c29b9b070ba4421a9f1c. 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_26.5.1_23F81_Restore.ipsw
  3. The output of the command should match the following checksum: ae3500d9b177a3712328c29b9b070ba4421a9f1c. 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_26.5.1_23F81_Restore.ipsw
  3. The output of the command should match the following checksum: ae3500d9b177a3712328c29b9b070ba4421a9f1c. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum33d26ed385ca2a0d7da18f9e62fa7709a6c341b06e13916e25f167b889ce3c1c
MD5sum41c333f20929fc03bd6de968a03a6d03
SHA1sumae3500d9b177a3712328c29b9b070ba4421a9f1c
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

This update addresses an issue for a small number of users that may prevent wired charging on iPhone Air and iPhone 17 models when the battery is nearly drained.

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