iOS 8.1.2 (12B440) for iPad Air 2 (Cellular)

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iPad Air 2 (Cellular)

✗ 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 (1.9 GiB)

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 Air 2 (Cellular) in to your PC.
  3. Open Apple Devices, and navigate to your iPad Air 2 (Cellular).
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPad5,4_8.1.2_12B440_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_8.1.2_12B440_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_8.1.2_12B440_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_8.1.2_12B440_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 90c775dea761b24e02eb846b62bda58cb429c80b. 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_8.1.2_12B440_Restore.ipsw
  3. The output of the command should match the following checksum: 90c775dea761b24e02eb846b62bda58cb429c80b. 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_8.1.2_12B440_Restore.ipsw
  3. The output of the command should match the following checksum: 90c775dea761b24e02eb846b62bda58cb429c80b. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum64f1a0440c558270eb9819fda0cbd1036b72ebd1adf11e10d5fba0fde82cdd7d
MD5sum64f1a0440c558270eb9819fda0cbd1036b72ebd1adf11e10d5fba0fde82cdd7d
SHA1sum90c775dea761b24e02eb846b62bda58cb429c80b
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

iOS 8.1.2

This release includes bug fixes and addresses a problem where ringtones purchased through the iTunes Store may have been removed from your device. To restore these ringtones, visit itunes.com/restore-tones from your iOS device.

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

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

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