iOS 5.1 (9B176) for iPad 1

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iPad 1

✗ This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore.

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Download (726 MiB)

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 iPad 1 in to your PC.
  3. Open Apple Devices, 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

SHA256sum8ee1bc5f49f8adb299e2b34ddbb41056333cde794714fac3db89aa0e9d01a1ad
MD5sum8ee1bc5f49f8adb299e2b34ddbb41056333cde794714fac3db89aa0e9d01a1ad
SHA1sumf6b19779d2fe4242f87d55701e049291c978e3b3
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

iOS 5.1

This update contains improvements and bug fixes, including:

  • Japanese language support for Siri (availability may be limited during initial rollout)

  • Photos can now be deleted from Photo Stream

  • Camera shortcut now always visible on Lock Screen for iPhone 4S, iPhone 4, iPhone 3GS and iPod touch (4th generation)

  • Camera face detection now highlights all detected faces

  • Redesigned Camera app for iPad

  • Genius Mixes and Genius playlists for iTunes Match subscribers

  • Audio for TV shows and movies on iPad optimized to sound louder and clearer

  • Podcast controls for playback speed and a 30 second rewind for iPad

  • Updated AT&T network indicator

  • Addresses bugs affecting battery life

  • Fixes an issue that occasionally caused audio to drop for outgoing calls

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

http://support.apple.com/kb/HT1222

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