IPSW Downloads

iOS 17.1.1 - 21B91 for iPhone 12 Pro Max

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

Release Date08 November 2023
Upload Date03 November 2023
File NameiPhone13,4_17.1.1_21B91_Restore.ipsw
File Size7.28 GB
SHA256sum6d0fdc965d5ede25baaae36a03914109520225e617c8ae50fd461f293135fa34
MD5sumfd6b63aceba26bef11cbda4c72b23f40
SHA1sumb3357869ea02564a8bb078e3a19a0dfb3827e1c4
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_17.1.1_21B91_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_17.1.1_21B91_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_17.1.1_21B91_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPhone 12 Pro Max to reboot.