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iPhone 4[S]

iOS 9.2.1 (13D15) for iPhone 4[S]

✗ 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 (1.59 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 4[S] in to your PC.
  3. Open iTunes, and navigate to your iPhone 4[S].
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone4,1_9.2.1_13D15_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone 4[S] to reboot.

macOS

  1. Plug your iPhone 4[S] in to your Mac.
  2. Navigate to your iPhone 4[S] in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone4,1_9.2.1_13D15_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone 4[S] to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 4[S] 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 iPhone4,1_9.2.1_13D15_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 4[S] to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPhone4,1_9.2.1_13D15_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: b6bd61a4ddb78bc65edc7d409de74bd6aa573e0a. 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 iPhone4,1_9.2.1_13D15_Restore.ipsw
  3. The output of the command should match the following checksum: b6bd61a4ddb78bc65edc7d409de74bd6aa573e0a. 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 iPhone4,1_9.2.1_13D15_Restore.ipsw
  3. The output of the command should match the following checksum: b6bd61a4ddb78bc65edc7d409de74bd6aa573e0a. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum 40a6100b6697dead0d60d2faf2260be304327fd7bcba78abed591aa03b3f469e
MD5sum f43df8b54efb8808e65cedd7239c021d
SHA1sum b6bd61a4ddb78bc65edc7d409de74bd6aa573e0a
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

This update contains security updates and bug fixes including a fix for an issue that could prevent the completion of app installation when using an MDM server.

For information on the security content of this update, please visit this website:

https://support.apple.com/HT201222

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