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iPhone 6+

iOS 11.4.1 (15G77) for iPhone 6+

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

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

Download (2.93 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 6+ in to your PC.
  3. Open iTunes, and navigate to your iPhone 6+.
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone_5.5_11.4.1_15G77_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_11.4.1_15G77_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_11.4.1_15G77_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_11.4.1_15G77_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 06dc5df272b54c6617d54f8095461ebfd419af70. 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_11.4.1_15G77_Restore.ipsw
  3. The output of the command should match the following checksum: 06dc5df272b54c6617d54f8095461ebfd419af70. 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_11.4.1_15G77_Restore.ipsw
  3. The output of the command should match the following checksum: 06dc5df272b54c6617d54f8095461ebfd419af70. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum 2246ce8f759f66db2b9a01cc4e4be1b709eba1807197a7fb89b8ae324369c86c
MD5sum 1f323d846007af8078847628bf9239ba
SHA1sum 06dc5df272b54c6617d54f8095461ebfd419af70
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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