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iPhone 6s+

iOS 15.7.3 (19H307) for iPhone 6s+

✗ 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 (5.43 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 6s+ in to your PC.
  3. Open iTunes, and navigate to your iPhone 6s+.
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone_5.5_15.7.3_19H307_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone 6s+ to reboot.

macOS

  1. Plug your iPhone 6s+ in to your Mac.
  2. Navigate to your iPhone 6s+ in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone_5.5_15.7.3_19H307_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone 6s+ to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 6s+ 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_15.7.3_19H307_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 6s+ 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_15.7.3_19H307_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: ba4306d19735f96d6abeb8a9a723d80a447a1017. 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_15.7.3_19H307_Restore.ipsw
  3. The output of the command should match the following checksum: ba4306d19735f96d6abeb8a9a723d80a447a1017. 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_15.7.3_19H307_Restore.ipsw
  3. The output of the command should match the following checksum: ba4306d19735f96d6abeb8a9a723d80a447a1017. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum 5cb27d6eabb3110f05528b8e724fb7bf4e3f23c36a02563dc899b90edc7d604b
MD5sum 4fe6132b180b1f646eca3192b0497d3e
SHA1sum ba4306d19735f96d6abeb8a9a723d80a447a1017
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

This update provides important security fixes and is recommended for all users.

For information on the security content of Apple software updates, please visit this website:

https://support.apple.com/kb/HT201222

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