iOS 17.5 (21F79) for iPhone 15

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iPhone 15

✗ This firmware is not signed. This means you cannot 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 (7.5 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 15 in to your PC.
  3. Open Apple Devices, and navigate to your iPhone 15.
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone15,4_17.5_21F79_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone 15 to reboot.

macOS

  1. Plug your iPhone 15 in to your Mac.
  2. Navigate to your iPhone 15 in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone15,4_17.5_21F79_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone 15 to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 15 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 iPhone15,4_17.5_21F79_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 15 to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPhone15,4_17.5_21F79_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 63991c525267f5adf72e6ebc8be10fe090d856ce. 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 iPhone15,4_17.5_21F79_Restore.ipsw
  3. The output of the command should match the following checksum: 63991c525267f5adf72e6ebc8be10fe090d856ce. 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 iPhone15,4_17.5_21F79_Restore.ipsw
  3. The output of the command should match the following checksum: 63991c525267f5adf72e6ebc8be10fe090d856ce. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum071facee10a2aea6946429ca2b9ff20ea80e3d7d6b39a4af9c94fcc05a58f8bc
MD5sum071facee10a2aea6946429ca2b9ff20ea80e3d7d6b39a4af9c94fcc05a58f8bc
SHA1sum63991c525267f5adf72e6ebc8be10fe090d856ce
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

Apple News

  • Offline mode in Apple News+ gives you access to the Today feed and News+ tab, even when you don’t have an internet connection

  • Quartiles is a new and original daily word game that is now available in Apple News+

  • Scoreboard in News+ Puzzles gives you access to new player data for Crossword, Mini Crossword and Quartiles, including stats and streaks

Tracking Notifications

  • Cross-Platform Tracking Detection delivers notifications to users if a compatible Bluetooth tracker they do not own is moving with them, regardless of what operating system the device is paired with

Some features may not be available for all regions or on all Apple devices. For information on the security content of Apple software updates, please visit this website:

https://support.apple.com/kb/HT201222

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