iOS 17.1.1 (21B91) for iPhone 12 Pro Max

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iPhone 12 Pro Max

✗ 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 (7.3 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 12 Pro Max in to your PC.
  3. Open Apple Devices, and navigate to your iPhone 12 Pro Max.
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone13,4_17.1.1_21B91_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone 12 Pro Max to reboot.

macOS

  1. Plug your iPhone 12 Pro Max in to your Mac.
  2. Navigate to your iPhone 12 Pro Max in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone13,4_17.1.1_21B91_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone 12 Pro Max to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 12 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 iPhone13,4_17.1.1_21B91_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 12 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 iPhone13,4_17.1.1_21B91_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: b3357869ea02564a8bb078e3a19a0dfb3827e1c4. 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 iPhone13,4_17.1.1_21B91_Restore.ipsw
  3. The output of the command should match the following checksum: b3357869ea02564a8bb078e3a19a0dfb3827e1c4. 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 iPhone13,4_17.1.1_21B91_Restore.ipsw
  3. The output of the command should match the following checksum: b3357869ea02564a8bb078e3a19a0dfb3827e1c4. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum6d0fdc965d5ede25baaae36a03914109520225e617c8ae50fd461f293135fa34
MD5sum6d0fdc965d5ede25baaae36a03914109520225e617c8ae50fd461f293135fa34
SHA1sumb3357869ea02564a8bb078e3a19a0dfb3827e1c4
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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