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iPad Air 2 (Cellular)

iOS 8.1.1 (12B436) for iPad Air 2 (Cellular)

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

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Download (2.09 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 iPad Air 2 (Cellular) in to your PC.
  3. Open iTunes, and navigate to your iPad Air 2 (Cellular).
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPad5,4_8.1.1_12B436_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPad Air 2 (Cellular) to reboot.

macOS

  1. Plug your iPad Air 2 (Cellular) in to your Mac.
  2. Navigate to your iPad Air 2 (Cellular) in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPad5,4_8.1.1_12B436_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPad Air 2 (Cellular) to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPad Air 2 (Cellular) 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 iPad5,4_8.1.1_12B436_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPad Air 2 (Cellular) to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPad5,4_8.1.1_12B436_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 0b1165cb1c11e339985f886b96b1baf249359d5e. 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 iPad5,4_8.1.1_12B436_Restore.ipsw
  3. The output of the command should match the following checksum: 0b1165cb1c11e339985f886b96b1baf249359d5e. 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 iPad5,4_8.1.1_12B436_Restore.ipsw
  3. The output of the command should match the following checksum: 0b1165cb1c11e339985f886b96b1baf249359d5e. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum 488585852733f1ced9fbe0e466075032a37b65b30fbde5f2002af2f831b8e5b6
MD5sum adbfdc62a2299ca1f8e562e101c3532d
SHA1sum 0b1165cb1c11e339985f886b96b1baf249359d5e
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

This release includes bug fixes, increased stability and performance improvements for iPad 2 and iPhone 4s.

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

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

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