IPSW Downloads

iPadOS 17.5.1 - 21F90 for iPad16,4

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

Release Date20 May 2024
Upload Date17 May 2024
File NameiPad16,3,iPad16,4,iPad16,5,iPad16,6_17.5.1_21F90_Restore.ipsw
File Size7.55 GB
SHA256sume7457772143bbede6c624309a53490b33ec846c4e876a1662f46d0d5bfb214bd
MD5sum4728e0cc1b52cfe5e9c90f78c98af1ee
SHA1sum8245ee87ccf3ea56454b1f1de454757563cbaf5f
IdentifieriPad16,4

Installation Instructions

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Connect your iPad16,4 to your PC.
  3. Open iTunes and navigate to your iPad16,4.
  4. Hold the Shift key and click "Restore".
  5. Select the iPad16,3,iPad16,4,iPad16,5,iPad16,6_17.5.1_21F90_Restore.ipsw file you downloaded.
  6. Wait for the restore to complete and for your iPad16,4 to reboot.

macOS

  1. Connect your iPad16,4 to your Mac.
  2. Navigate to your iPad16,4 in Finder.
  3. Hold the Option or Alt key and click "Restore".
  4. Select the iPad16,3,iPad16,4,iPad16,5,iPad16,6_17.5.1_21F90_Restore.ipsw file you downloaded.
  5. Wait for the restore to complete and for your iPad16,4 to reboot.

Linux

  1. Install idevicerestore.
  2. Connect your iPad16,4 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 iPad16,3,iPad16,4,iPad16,5,iPad16,6_17.5.1_21F90_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPad16,4 to reboot.