iOS 11.3.1 (15E302) 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 (2.6 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_4.7_11.3.1_15E302_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_4.7_11.3.1_15E302_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_4.7_11.3.1_15E302_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_4.7_11.3.1_15E302_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: dae0911e040a9717233e4c751939985ede6c7bf8. 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_4.7_11.3.1_15E302_Restore.ipsw
  3. The output of the command should match the following checksum: dae0911e040a9717233e4c751939985ede6c7bf8. 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_4.7_11.3.1_15E302_Restore.ipsw
  3. The output of the command should match the following checksum: dae0911e040a9717233e4c751939985ede6c7bf8. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum025955983f7fdbf2cc4f3207c4c2d1e25f872cc085763d47f5f50e3792c5bd34
MD5sum025955983f7fdbf2cc4f3207c4c2d1e25f872cc085763d47f5f50e3792c5bd34
SHA1sumdae0911e040a9717233e4c751939985ede6c7bf8
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

iOS 11.3.1 improves the security of your iPhone or iPad and addresses an issue where touch input was unresponsive on some iPhone 8 devices because they were serviced with non-genuine replacement displays.

Note: Non-genuine replacement displays may have compromised visual quality and may fail to work correctly. Apple-certified screen repairs are performed by trusted experts who use genuine Apple parts. See https://support.apple.com for more information.

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

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