iPadOS 17.5.1 (21F90)
iPad Pro (M4, 11-inch, WiFi)
iPad16,3,iPad16,4,iPad16,5,iPad16,6_17.5.1_21F90_Restore.ipsw
Device
iPad Pro (M4, 11-inch, WiFi)
SHA1
8245ee87ccf3ea56454b1f1de454757563cbaf5f
SHA256
e7457772143bbede6c624309a53490b33ec846c4e876a1662f46d0d5bfb214bd
MD5
4728e0cc1b52cfe5e9c90f78c98af1ee
iPadOS 17.5.1 Release Notes
Emoji
- New mushroom, phoenix, lime, broken chain, and shaking heads emoji are available in the emoji keyboard
- 18 people and body emoji add the option to face them in either direction
Apple Podcasts
- Transcripts let you follow an episode with text that highlights in sync with the audio in English, Spanish, French and German
- Episode text can be read in full, searched for a word or phrase, tapped to play from a specific point and used with accessibility features such as Text Size, Increase Contrast, and VoiceOver
This update also includes the following enhancements and bug fixes:
- Music recognition lets you add songs you have identified to your Apple Music Playlists and Library
- Business updates you opt into keep you informed of order status, flight notifications, fraud alerts or other transactions from trusted businesses in Messages for Business
- Apple Cash virtual card numbers enable you to pay with Apple Cash at merchants that don’t yet accept Apple Pay by typing in your number from Wallet or using Safari AutoFill
- Fixes an issue where contact pictures are blank in Find My
- Safari Favorites Bar adds an option to show only icons for websites
Some features may not be available for all regions or on all Apple devices. For information on the security content of Apple software updates, please visit this website: https://support.apple.com/kb/HT201222
How to Restore iPadOS 17.5.1 IPSW
🖥
iTunes (Windows / macOS Mojave and older) & Finder (macOS Catalina+)
- Download the iPad16,3,iPad16,4,iPad16,5,iPad16,6_17.5.1_21F90_Restore.ipsw file to your computer.
- Connect your iPad Pro (M4, 11-inch, WiFi) to your computer with a USB cable.
- Open Finder (macOS Catalina+) or iTunes (Windows / older macOS) and select your device.
- To Update (keeps data): hold Option (Mac) or Shift (Windows) and click Check for Update.
- To Restore (erases data): hold Option (Mac) or Shift (Windows) and click Restore iPhone/iPad.
- Navigate to and select the downloaded .ipsw file, then confirm.
- Wait for the process to complete — do not disconnect the device.
⚠️ Note: This firmware is no longer signed by Apple. iTunes/Finder may reject the restore. Use a tool like futurerestore if you have saved blobs.
⌨️
idevicerestore (Command Line)
An open-source command-line tool that restores IPSW files without needing iTunes. Useful for advanced users, automation, and custom restore workflows.
- Install via Homebrew:
brew install idevicerestore
- Connect your device and put it into DFU mode.
- Run the restore command:
idevicerestore -t iPad16,3,iPad16,4,iPad16,5,iPad16,6_17.5.1_21F90_Restore.ipsw
Common flags:
-eErase restore (factory reset)
-uUpdate restore (keep data)
-dEnable debug output
-nDry-run — don't actually restore
🔓
futurerestore (Saved Blobs / Downgrade)
futurerestore allows restoring to unsigned firmware like this one when you have saved APTickets (blobs) from a tool like TSSSaver or shsh.host.
- Download futurerestore from github.com/futurerestore/futurerestore.
- Ensure you have a saved .shsh2 blob for iPadOS 17.5.1 (21F90) on your iPad Pro (M4, 11-inch, WiFi).
- Put your device into DFU mode and run:
futurerestore -t your_blob.shsh2 --latest-sep --latest-baseband iPad16,3,iPad16,4,iPad16,5,iPad16,6_17.5.1_21F90_Restore.ipsw
⛔ Warning: Using --latest-sep requires the latest SEP to be compatible with iPadOS 17.5.1. Always verify compatibility before restoring to avoid a bricked device.
📲
Entering DFU Mode
DFU (Device Firmware Update) mode is required for most manual restores. The button combination varies by device:
iPhone 8 / X and later / iPad with Face ID
Press & release Volume Up → press & release Volume Down → hold Side button until screen goes black → hold Side + Volume Down for 5 s → release Side but keep Volume Down for 10 s.
iPhone 7 / 7 Plus
Hold Side + Volume Down for 8 s → release Side but keep Volume Down for 10 s.
iPhone 6s and earlier / iPad with Home button
Hold Home + Sleep/Wake for 8 s → release Sleep/Wake but keep Home for 10 s.
💡 Tip: In DFU mode the screen stays completely black. If you see the Apple logo or a "Connect to iTunes" screen, you entered Recovery mode instead — try again.
⇓ Download IPSW Firmware (7.55 GB)
