iPadOS 15.3.1 (19D52) for iPad Air 4 (Cellular)

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iPad Air 4 (Cellular)

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

Your download should begin shortly. If it does not, you can download it directly here:

Download (5.4 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 4 (Cellular) in to your PC.
  3. Open Apple Devices, and navigate to your iPad Air 4 (Cellular).
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPad_Fall_2020_15.3.1_19D52_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPad Air 4 (Cellular) to reboot.

macOS

  1. Plug your iPad Air 4 (Cellular) in to your Mac.
  2. Navigate to your iPad Air 4 (Cellular) in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPad_Fall_2020_15.3.1_19D52_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPad Air 4 (Cellular) to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPad Air 4 (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 iPad_Fall_2020_15.3.1_19D52_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPad Air 4 (Cellular) to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPad_Fall_2020_15.3.1_19D52_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 9a4429d60f4cf01e70aa200f084a312c3225da21. 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 iPad_Fall_2020_15.3.1_19D52_Restore.ipsw
  3. The output of the command should match the following checksum: 9a4429d60f4cf01e70aa200f084a312c3225da21. 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 iPad_Fall_2020_15.3.1_19D52_Restore.ipsw
  3. The output of the command should match the following checksum: 9a4429d60f4cf01e70aa200f084a312c3225da21. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum09b3fd429b1c99d7a406b2dc17291c30859516f43c541a9c98fee9aa61dc8cff
MD5sum09b3fd429b1c99d7a406b2dc17291c30859516f43c541a9c98fee9aa61dc8cff
SHA1sum9a4429d60f4cf01e70aa200f084a312c3225da21
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

iPadOS 15.3.1 provides important security updates for your iPad and fixes an issue that may cause Braille displays to stop responding.

For information on the security content of Apple software updates, please visit this website:

https://support.apple.com/kb/HT201222

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