IPSW Downloads

iOS 17.2.1 - 21C66 for iPhone 15 Pro Max

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

Release Date19 December 2023
Upload Date16 December 2023
File NameiPhone16,2_17.2.1_21C66_Restore.ipsw
File Size7.57 GB
SHA256sum9cd3d719754b848f56b702fe8c9621458671d7fd590d0a6f674340e7fa83ac4f
MD5sum4c0a584f14b717905dfed5d84b0a9697
SHA1sum100203f832f028723a23b72730e14868b5bd2c48
IdentifieriPhone16,2

Installation Instructions

Windows

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

macOS

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

Linux

  1. Install idevicerestore.
  2. Connect your iPhone 15 Pro Max 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 iPhone16,2_17.2.1_21C66_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPhone 15 Pro Max to reboot.