iOS 17.2.1 (21C66) for iPhone 13 Pro Max

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iPhone 13 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 13 Pro Max in to your PC.
  3. Open Apple Devices, and navigate to your iPhone 13 Pro Max.
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone14,3_17.2.1_21C66_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone 13 Pro Max to reboot.

macOS

  1. Plug your iPhone 13 Pro Max in to your Mac.
  2. Navigate to your iPhone 13 Pro Max in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone14,3_17.2.1_21C66_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone 13 Pro Max to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 13 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 iPhone14,3_17.2.1_21C66_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 13 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 iPhone14,3_17.2.1_21C66_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: a173bfb5c1d01ff518058b737137a45377626471. 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 iPhone14,3_17.2.1_21C66_Restore.ipsw
  3. The output of the command should match the following checksum: a173bfb5c1d01ff518058b737137a45377626471. 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 iPhone14,3_17.2.1_21C66_Restore.ipsw
  3. The output of the command should match the following checksum: a173bfb5c1d01ff518058b737137a45377626471. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum5afd010177feaee9f124244d33e32f74de2d22dd49b83b62c045c9f942129bca
MD5sum5afd010177feaee9f124244d33e32f74de2d22dd49b83b62c045c9f942129bca
SHA1suma173bfb5c1d01ff518058b737137a45377626471
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 is recommended for all users.

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

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

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