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iPhone SE

iOS 12.3.1 (16F203) for iPhone SE

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

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Download (3.13 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 SE in to your PC.
  3. Open iTunes, and navigate to your iPhone SE.
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone_4.0_64bit_12.3.1_16F203_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone SE to reboot.

macOS

  1. Plug your iPhone SE in to your Mac.
  2. Navigate to your iPhone SE in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone_4.0_64bit_12.3.1_16F203_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone SE to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone SE 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 iPhone_4.0_64bit_12.3.1_16F203_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone SE to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPhone_4.0_64bit_12.3.1_16F203_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: a2421715aa1c95cd294e22d062bd0ce492bb4a26. 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 iPhone_4.0_64bit_12.3.1_16F203_Restore.ipsw
  3. The output of the command should match the following checksum: a2421715aa1c95cd294e22d062bd0ce492bb4a26. 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 iPhone_4.0_64bit_12.3.1_16F203_Restore.ipsw
  3. The output of the command should match the following checksum: a2421715aa1c95cd294e22d062bd0ce492bb4a26. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum 8d578d4c0c31dfb86271bc10841024629ed46becf6a53aaa6150f22840bb41a6
MD5sum 787d63093812d8abbcf0d247bb6d5385
SHA1sum a2421715aa1c95cd294e22d062bd0ce492bb4a26
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

iOS 12.3.1 includes bug fixes for your iPhone and iPad. This update:

  • Fixes an issue that could prevent making or receiving VoLTE calls

  • Fixes issues in Messages that could cause messages from unknown senders to appear in your conversation list even though Filter Unknown Senders is enabled

  • Fixes an issue that could prevent the Report Junk link from appearing in Messages threads from unknown senders

For information on the security content of this update, please visit this website: https://support.apple.com/kb/HT201222

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