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iPhone 6s+

iOS 15.8.4 (19H390) for iPhone 6s+

✓ This firmware is signed. This means that you can restore to it in iTunes.

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

Download (5.43 GB)

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_15.8.4_19H390_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_15.8.4_19H390_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_15.8.4_19H390_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_15.8.4_19H390_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 100813ebcbab2bd765135af8ce1dacb9c59438dc. 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_15.8.4_19H390_Restore.ipsw
  3. The output of the command should match the following checksum: 100813ebcbab2bd765135af8ce1dacb9c59438dc. 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_15.8.4_19H390_Restore.ipsw
  3. The output of the command should match the following checksum: 100813ebcbab2bd765135af8ce1dacb9c59438dc. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum 0791a1d2a91f78047c9128845337ef8b18175bbf61097573621153ef1f1cb77c
MD5sum 480f4eb5ed38a0f2c9e6e0ac6d26fdde
SHA1sum 100813ebcbab2bd765135af8ce1dacb9c59438dc
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/HT201222

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