IPSW Downloads

iOS 17.2.1 - 21C66 for iPhone 13 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 NameiPhone14,3_17.2.1_21C66_Restore.ipsw
File Size7.29 GB
SHA256sum5afd010177feaee9f124244d33e32f74de2d22dd49b83b62c045c9f942129bca
MD5sum795915d3ed8fb0c0983108cee2db1735
SHA1suma173bfb5c1d01ff518058b737137a45377626471
IdentifieriPhone14,3

Installation Instructions

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Connect your iPhone 13 Pro Max to your PC.
  3. Open iTunes and navigate to your iPhone 13 Pro Max.
  4. Hold the Shift key and click "Restore".
  5. Select the iPhone14,3_17.2.1_21C66_Restore.ipsw file you downloaded.
  6. Wait for the restore to complete and for your iPhone 13 Pro Max to reboot.

macOS

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

Linux

  1. Install idevicerestore.
  2. Connect your iPhone 13 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 iPhone14,3_17.2.1_21C66_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPhone 13 Pro Max to reboot.