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iPad 1

iOS 5.1 (9B176) for iPad 1

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

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Download (761 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 iPad 1 in to your PC.
  3. Open iTunes, and navigate to your iPad 1.
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPad1,1_5.1_9B176_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPad 1 to reboot.

macOS

  1. Plug your iPad 1 in to your Mac.
  2. Navigate to your iPad 1 in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPad1,1_5.1_9B176_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPad 1 to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPad 1 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 iPad1,1_5.1_9B176_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPad 1 to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPad1,1_5.1_9B176_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: f6b19779d2fe4242f87d55701e049291c978e3b3. 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 iPad1,1_5.1_9B176_Restore.ipsw
  3. The output of the command should match the following checksum: f6b19779d2fe4242f87d55701e049291c978e3b3. 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 iPad1,1_5.1_9B176_Restore.ipsw
  3. The output of the command should match the following checksum: f6b19779d2fe4242f87d55701e049291c978e3b3. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum 8ee1bc5f49f8adb299e2b34ddbb41056333cde794714fac3db89aa0e9d01a1ad
MD5sum 1259442021913f1d9f0fffd006e3d0de
SHA1sum f6b19779d2fe4242f87d55701e049291c978e3b3
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