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iPod touch 4

iOS 5.1 (9B176) for iPod touch 4

✗ This firmware is not signed. This means you cannot restore to it in iTunes.

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Download (786 MB)

✗ 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 iPod touch 4 in to your PC.
  3. Open iTunes, and navigate to your iPod touch 4.
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPod4,1_5.1_9B176_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPod touch 4 to reboot.

macOS

  1. Plug your iPod touch 4 in to your Mac.
  2. Navigate to your iPod touch 4 in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPod4,1_5.1_9B176_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPod touch 4 to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPod touch 4 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 iPod4,1_5.1_9B176_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPod touch 4 to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPod4,1_5.1_9B176_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 65d7ee2d2fa505ce6fe91271f84f3fc9cbcc81a1. 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 iPod4,1_5.1_9B176_Restore.ipsw
  3. The output of the command should match the following checksum: 65d7ee2d2fa505ce6fe91271f84f3fc9cbcc81a1. 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 iPod4,1_5.1_9B176_Restore.ipsw
  3. The output of the command should match the following checksum: 65d7ee2d2fa505ce6fe91271f84f3fc9cbcc81a1. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum 22022f4bb003deb24189063692c478d74275dcb1e1b2b7df30cbe6d01048b167
MD5sum 3eeb95d6b80b50d33708471d2e1b9306
SHA1sum 65d7ee2d2fa505ce6fe91271f84f3fc9cbcc81a1
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