IPSW Downloads

iOS 12.3.1 - 16F203 for iPhone 8 Plus

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

Release Date24 May 2019
Upload Date22 May 2019
File NameiPhone_5.5_P3_12.3.1_16F203_Restore.ipsw
File Size3.32 GB
SHA256sumfdce1f339084c4dabb2bf1de6fe13d4d0217c17deea03a496bb283b162bc3ab6
MD5sumd68288bc547ba7d01dff340c19cdad92
SHA1sum7364bb0b1dde0c526cc721e5a0a914c436215b49
IdentifieriPhone10,5

Installation Instructions

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Connect your iPhone 8 Plus to your PC.
  3. Open iTunes and navigate to your iPhone 8 Plus.
  4. Hold the Shift key and click "Restore".
  5. Select the iPhone_5.5_P3_12.3.1_16F203_Restore.ipsw file you downloaded.
  6. Wait for the restore to complete and for your iPhone 8 Plus to reboot.

macOS

  1. Connect your iPhone 8 Plus to your Mac.
  2. Navigate to your iPhone 8 Plus in Finder.
  3. Hold the Option or Alt key and click "Restore".
  4. Select the iPhone_5.5_P3_12.3.1_16F203_Restore.ipsw file you downloaded.
  5. Wait for the restore to complete and for your iPhone 8 Plus to reboot.

Linux

  1. Install idevicerestore.
  2. Connect your iPhone 8 Plus 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 iPhone_5.5_P3_12.3.1_16F203_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPhone 8 Plus to reboot.