IPSW Downloads

iOS 17.2.1 - 21C66 for iPhone 15 Pro

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

Release Date19 December 2023
Upload Date16 December 2023
File NameiPhone16,1_17.2.1_21C66_Restore.ipsw
File Size7.57 GB
SHA256sumc5855b65a804e267925bc569da8fb3477691fcb6f085613653798145453e99d5
MD5sum16145c5a819cdfaca3458ff5aa3974e1
SHA1sum1a6c1a2d0e90c3273b8296c7aa702b3b60486989
IdentifieriPhone16,1

Installation Instructions

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Connect your iPhone 15 Pro to your PC.
  3. Open iTunes and navigate to your iPhone 15 Pro.
  4. Hold the Shift key and click "Restore".
  5. Select the iPhone16,1_17.2.1_21C66_Restore.ipsw file you downloaded.
  6. Wait for the restore to complete and for your iPhone 15 Pro to reboot.

macOS

  1. Connect your iPhone 15 Pro to your Mac.
  2. Navigate to your iPhone 15 Pro in Finder.
  3. Hold the Option or Alt key and click "Restore".
  4. Select the iPhone16,1_17.2.1_21C66_Restore.ipsw file you downloaded.
  5. Wait for the restore to complete and for your iPhone 15 Pro to reboot.

Linux

  1. Install idevicerestore.
  2. Connect your iPhone 15 Pro to your PC.
  3. Open a terminal and navigate to the IPSW file you downloaded, e.g., cd ~/Downloads.
  4. To perform a full erase restore, type idevicerestore -e iPhone16,1_17.2.1_21C66_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPhone 15 Pro to reboot.