IPSW Downloads

iPadOS 15.1 - 19B74 for iPad Air 4th Gen (WiFi+Cellular)

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

Release Date25 October 2021
Upload Date15 October 2021
File NameiPad_Fall_2020_15.1_19B74_Restore.ipsw
File Size5.43 GB
SHA256sumbcde0dba775219f183ee17e2179e6a61a8737a4e0c7b88bea7853a698774d9e1
MD5sum82ad63193f00305dd5e8846ef3df19f8
SHA1sumc37839c73b65ddb3fb04c52aad6b14372d5142b8
IdentifieriPad13,2

Installation Instructions

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Connect your iPad Air 4th Gen (WiFi+Cellular) to your PC.
  3. Open iTunes and navigate to your iPad Air 4th Gen (WiFi+Cellular).
  4. Hold the Shift key and click "Restore".
  5. Select the iPad_Fall_2020_15.1_19B74_Restore.ipsw file you downloaded.
  6. Wait for the restore to complete and for your iPad Air 4th Gen (WiFi+Cellular) to reboot.

macOS

  1. Connect your iPad Air 4th Gen (WiFi+Cellular) to your Mac.
  2. Navigate to your iPad Air 4th Gen (WiFi+Cellular) in Finder.
  3. Hold the Option or Alt key and click "Restore".
  4. Select the iPad_Fall_2020_15.1_19B74_Restore.ipsw file you downloaded.
  5. Wait for the restore to complete and for your iPad Air 4th Gen (WiFi+Cellular) to reboot.

Linux

  1. Install idevicerestore.
  2. Connect your iPad Air 4th Gen (WiFi+Cellular) to your PC.
  3. Open a terminal and navigate to the IPSW file you downloaded, e.g., cd ~/Downloads.
  4. To perform a full erase restore, type idevicerestore -e iPad_Fall_2020_15.1_19B74_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPad Air 4th Gen (WiFi+Cellular) to reboot.