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iPhone 8 Plus (Global)

iOS 11.4.1 (15G77) for iPhone 8 Plus (Global)

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

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✗ 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 8 Plus (Global) in to your PC.
  3. Open iTunes, and navigate to your iPhone 8 Plus (Global).
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone_5.5_P3_11.0_11.4.1_15G77_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone 8 Plus (Global) to reboot.

macOS

  1. Plug your iPhone 8 Plus (Global) in to your Mac.
  2. Navigate to your iPhone 8 Plus (Global) in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone_5.5_P3_11.0_11.4.1_15G77_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone 8 Plus (Global) to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 8 Plus (Global) 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_5.5_P3_11.0_11.4.1_15G77_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 8 Plus (Global) to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPhone_5.5_P3_11.0_11.4.1_15G77_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: dde8446d5f5e8865de8f1c018b23b4ec6080d8f4. 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_5.5_P3_11.0_11.4.1_15G77_Restore.ipsw
  3. The output of the command should match the following checksum: dde8446d5f5e8865de8f1c018b23b4ec6080d8f4. 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_5.5_P3_11.0_11.4.1_15G77_Restore.ipsw
  3. The output of the command should match the following checksum: dde8446d5f5e8865de8f1c018b23b4ec6080d8f4. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum 772d1cd09cbf8b4ded5f3e4507a4a3fdbcbad102c6b6fe125ab1941359c6f6b4
MD5sum 521c237322a0db9161c36608a33726fe
SHA1sum dde8446d5f5e8865de8f1c018b23b4ec6080d8f4
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

iOS 11.4.1 includes bug fixes and improves the security of your iPhone or iPad. This update:

  • Fixes an issue that prevented some users from viewing the last known location of their AirPods in Find My iPhone

  • Improves reliability of syncing mail, contacts and notes with Exchange accounts

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

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