IPSW Downloads

iOS 17.1 - 21B74 for iPhone 12 Pro Max

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

Release Date25 October 2023
Upload Date15 October 2023
File NameiPhone13,4_17.1_21B74_Restore.ipsw
File Size7.28 GB
SHA256sumcb6ef047aa08486af3c5bc3234cb96e2fe5294d2dcd93c5920d7adc49814d671
MD5sumc62ed62c0816cc41dee8390ba3bdef9f
SHA1sum3d8733ee6fc36e07f83443ee98570fe6a2fc16af
IdentifieriPhone13,4

Installation Instructions

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Connect your iPhone 12 Pro Max to your PC.
  3. Open iTunes and navigate to your iPhone 12 Pro Max.
  4. Hold the Shift key and click "Restore".
  5. Select the iPhone13,4_17.1_21B74_Restore.ipsw file you downloaded.
  6. Wait for the restore to complete and for your iPhone 12 Pro Max to reboot.

macOS

  1. Connect your iPhone 12 Pro Max to your Mac.
  2. Navigate to your iPhone 12 Pro Max in Finder.
  3. Hold the Option or Alt key and click "Restore".
  4. Select the iPhone13,4_17.1_21B74_Restore.ipsw file you downloaded.
  5. Wait for the restore to complete and for your iPhone 12 Pro Max to reboot.

Linux

  1. Install idevicerestore.
  2. Connect your iPhone 12 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 iPhone13,4_17.1_21B74_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPhone 12 Pro Max to reboot.