iOS 15.8.4 (19H390) for iPhone 6s

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iPhone 6s

✗ 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 (4.9 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 6s in to your PC.
  3. Open Apple Devices, and navigate to your iPhone 6s.
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone_4.7_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_4.7_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_4.7_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_4.7_15.8.4_19H390_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: a27fb4d1324841ede2fb445c2cac89d40913c216. 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_15.8.4_19H390_Restore.ipsw
  3. The output of the command should match the following checksum: a27fb4d1324841ede2fb445c2cac89d40913c216. 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_15.8.4_19H390_Restore.ipsw
  3. The output of the command should match the following checksum: a27fb4d1324841ede2fb445c2cac89d40913c216. If it doesn't, you may need to redownload the file.

Checksums

SHA256sume74977fdf5fd7c652ff7a265a0a2760d4bbac533cc722112a674671c1b9569df
MD5sume74977fdf5fd7c652ff7a265a0a2760d4bbac533cc722112a674671c1b9569df
SHA1suma27fb4d1324841ede2fb445c2cac89d40913c216
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 bug fixes and security updates 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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