iOS 11.4 (15F79) for iPhone 6+

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iPhone 6+

✗ This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore.

Your download should begin shortly. If it does not, you can download it directly here:

Download (2.7 GiB)

This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore. The instructions below are included for reference only.

Windows

  1. Install the latest version of Apple Devices from the Microsoft Store.
  2. Plug your iPhone 6+ in to your PC.
  3. Open Apple Devices, and navigate to your iPhone 6+.
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone_5.5_11.4_15F79_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone 6+ to reboot.

macOS

  1. Plug your iPhone 6+ in to your Mac.
  2. Navigate to your iPhone 6+ in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone_5.5_11.4_15F79_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone 6+ to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 6+ 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_11.4_15F79_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 6+ 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_11.4_15F79_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 2bb3f264370c24446289eb033094323957037cca. 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_11.4_15F79_Restore.ipsw
  3. The output of the command should match the following checksum: 2bb3f264370c24446289eb033094323957037cca. 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_11.4_15F79_Restore.ipsw
  3. The output of the command should match the following checksum: 2bb3f264370c24446289eb033094323957037cca. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum6f87e69c6281a2a48b18a661a0ca11d4e0c688e091df5ef3dad36d4c12222988
MD5sum6f87e69c6281a2a48b18a661a0ca11d4e0c688e091df5ef3dad36d4c12222988
SHA1sum2bb3f264370c24446289eb033094323957037cca
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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