IPSW Downloads

iOS 15.1.1 - 19B81 for iPhone 12 Pro Max

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

Release Date17 November 2021
Upload Date12 November 2021
File NameiPhone13,4_15.1.1_19B81_Restore.ipsw
File Size6.17 GB
SHA256sum8681413bc9c89a96c2c18c3f722425969f9320d404168c7e06b5cece41fe3c15
MD5sum58bd04a20e4edd5e8ae6e109072454ac
SHA1sumc2cb8f4c988a0525655b614681b284beb948d1c5
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_15.1.1_19B81_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_15.1.1_19B81_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_15.1.1_19B81_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPhone 12 Pro Max to reboot.