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iPhone 12 Pro Max

iOS 14.2.1 (18B121) for iPhone 12 Pro Max

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

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Download (5.51 GB)

✗ This firmware is not signed. This means you cannot restore to it in iTunes. The instructions below are included for reference only.

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Plug your iPhone 12 Pro Max in to your PC.
  3. Open iTunes, and navigate to your iPhone 12 Pro Max.
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone13,4_14.2.1_18B121_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone 12 Pro Max to reboot.

macOS

  1. Plug your iPhone 12 Pro Max in to your Mac.
  2. Navigate to your iPhone 12 Pro Max in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone13,4_14.2.1_18B121_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone 12 Pro Max to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 12 Pro Max in to your PC.
  3. Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
  4. To perform a full erase restore, type idevicerestore -e iPhone13,4_14.2.1_18B121_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 12 Pro Max to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPhone13,4_14.2.1_18B121_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 23de8dbffa0b0ce3caad60e6732bbf11f85ea482. If it doesn't, you may need to redownload the file.

macOS

  1. Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
  2. Type openssl sha1 iPhone13,4_14.2.1_18B121_Restore.ipsw
  3. The output of the command should match the following checksum: 23de8dbffa0b0ce3caad60e6732bbf11f85ea482. If it doesn't, you may need to redownload the file.

Linux

  1. Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
  2. Type openssl sha1 iPhone13,4_14.2.1_18B121_Restore.ipsw
  3. The output of the command should match the following checksum: 23de8dbffa0b0ce3caad60e6732bbf11f85ea482. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum 8cee4ef1fcbeb56de8f748a007ca0d420a9a27ebbdc67e5be2a2d11b099d434b
MD5sum 83e1d67d46a27642cdd71558832bf5e1
SHA1sum 23de8dbffa0b0ce3caad60e6732bbf11f85ea482
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

iOS 14.2.1 addresses the following issues for your iPhone:

  • Some MMS messages may not be received
  • Made for iPhone hearing devices could have sound quality issues when listening to audio from iPhone
  • Lock Screen could become unresponsive on iPhone 12 mini

For information on the security content of Apple software updates, please visit this website:

https://support.apple.com/kb/HT201222

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