iOS 17.1.1 (21B91) 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_17.1.1_21B91_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_17.1.1_21B91_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_17.1.1_21B91_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_17.1.1_21B91_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 8ff5369d46ea476c82a786ef20c206da23b931e6. 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_17.1.1_21B91_Restore.ipsw
  3. The output of the command should match the following checksum: 8ff5369d46ea476c82a786ef20c206da23b931e6. 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_17.1.1_21B91_Restore.ipsw
  3. The output of the command should match the following checksum: 8ff5369d46ea476c82a786ef20c206da23b931e6. If it doesn't, you may need to redownload the file.

Checksums

SHA256sumda2a9e331cc10d9cd333cb2511d1d38b68488826171e1c0c4277a6c1f2e37818
MD5sumda2a9e331cc10d9cd333cb2511d1d38b68488826171e1c0c4277a6c1f2e37818
SHA1sum8ff5369d46ea476c82a786ef20c206da23b931e6
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 including:

  • In rare circumstances, Apple Pay and other NFC features may become unavailable on iPhone 15 models after wireless charging in certain cars

  • Weather Lock Screen widget may not correctly display snow

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