1 Choose a product
2 Choose a platform
3 Choose a version
4 Download
iPhone 6s+

iOS 15.8.3 (19H386) 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 (5.44 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_15.8.3_19H386_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_15.8.3_19H386_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_15.8.3_19H386_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_15.8.3_19H386_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 1637ed7dbbc426d758ad5ec89c53360cf6d203cf. 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_15.8.3_19H386_Restore.ipsw
  3. The output of the command should match the following checksum: 1637ed7dbbc426d758ad5ec89c53360cf6d203cf. 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_15.8.3_19H386_Restore.ipsw
  3. The output of the command should match the following checksum: 1637ed7dbbc426d758ad5ec89c53360cf6d203cf. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum 3adaee7fd68149b9bcfb34343014853272a99c761105a349068f7b56708b9640
MD5sum e6a0b981c87d490573fadd74d759379f
SHA1sum 1637ed7dbbc426d758ad5ec89c53360cf6d203cf
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

Bluesky Mastodon r/jailbreak Twitter