1 Choose a product
2 Choose a platform
3 Choose a version
4 Download
iPhone SE (3rd generation)

iOS 17.2.1 (21C66) for iPhone SE (3rd generation)

✗ 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 (7.5 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 SE (3rd generation) in to your PC.
  3. Open iTunes, and navigate to your iPhone SE (3rd generation).
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone14,6_17.2.1_21C66_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone SE (3rd generation) to reboot.

macOS

  1. Plug your iPhone SE (3rd generation) in to your Mac.
  2. Navigate to your iPhone SE (3rd generation) in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone14,6_17.2.1_21C66_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone SE (3rd generation) to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone SE (3rd generation) 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 iPhone14,6_17.2.1_21C66_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone SE (3rd generation) to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPhone14,6_17.2.1_21C66_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 85bfa91f74e20b90925c693fec8d6af6985027e4. 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 iPhone14,6_17.2.1_21C66_Restore.ipsw
  3. The output of the command should match the following checksum: 85bfa91f74e20b90925c693fec8d6af6985027e4. 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 iPhone14,6_17.2.1_21C66_Restore.ipsw
  3. The output of the command should match the following checksum: 85bfa91f74e20b90925c693fec8d6af6985027e4. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum 8026a07badd1eb96ef7c6c1d3765fe431e066112ad0abf23968432f793a345b1
MD5sum b86fd4b0fe96713ccc2eab6d64283081
SHA1sum 85bfa91f74e20b90925c693fec8d6af6985027e4
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

Bluesky Mastodon r/jailbreak Twitter