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iPhone 11 Pro Max

iOS 17.4.1 (21E236) for iPhone 11 Pro Max

✗ This firmware is not signed. This means you cannot restore to it in iTunes.

Your download should begin shortly. If it does not, you can download it directly here:

Download (7.52 GB)

✗ This firmware is not signed. This means you cannot restore to it in iTunes. The instructions below are included for reference only.

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Plug your iPhone 11 Pro Max in to your PC.
  3. Open iTunes, and navigate to your iPhone 11 Pro Max.
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone12,3,iPhone12,5_17.4.1_21E236_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone 11 Pro Max to reboot.

macOS

  1. Plug your iPhone 11 Pro Max in to your Mac.
  2. Navigate to your iPhone 11 Pro Max in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone12,3,iPhone12,5_17.4.1_21E236_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone 11 Pro Max to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 11 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 iPhone12,3,iPhone12,5_17.4.1_21E236_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 11 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 iPhone12,3,iPhone12,5_17.4.1_21E236_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: c400f11feb4eb8516b9812c83cbca3db4dedf67c. 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 iPhone12,3,iPhone12,5_17.4.1_21E236_Restore.ipsw
  3. The output of the command should match the following checksum: c400f11feb4eb8516b9812c83cbca3db4dedf67c. 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 iPhone12,3,iPhone12,5_17.4.1_21E236_Restore.ipsw
  3. The output of the command should match the following checksum: c400f11feb4eb8516b9812c83cbca3db4dedf67c. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum 8c2965d59b92d17ecc28d4edf56f885f52a1944bcb5455791a9717a86038fd3e
MD5sum 2b45246abefbc24273da659b39b9daf5
SHA1sum c400f11feb4eb8516b9812c83cbca3db4dedf67c
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 security updates 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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