iPad Air 4 (WiFi) iPad13,1

IPSW Unsigned 21B74

iPadOS 17.1

iPadOS

Version

17.1

Build ID

21B74

File Size

6.85 GB

Release Date

2023-10-25

Last Updated

2023-10-15

Download IPSW

Beta firmware? Download Here →

About This Firmware

iPadOS 17.1 (build 21B74) is an official Apple IPSW for the iPad Air 4 (WiFi), released on 2023-10-25. The file is served directly from Apple's CDN. This firmware is no longer signed by Apple. Standard downgrades are not possible, but the file remains available for reference and advanced use.

Verify the download using the SHA-256 or SHA-1 checksum listed in the Checksums section below.

Filename

iPad_Fall_2020_17.1_21B74_Restore.ipsw

Checksums

SHA-256 a04e548afa8b9e43e60f77728715405d550b0286edf57dfc717329ab4dfa984a

SHA-1 9786da749e89638078687f15d4b030695e01a62b

MD5 8c62e6ab93fdc84ae43361970ed860ff

Direct URL

https://updates.cdn-apple.com/2023FallFCS/fullrestores/042-07823/AFC30AA7-BE92-4550-8DE1-CA9683DF31F6/iPad_Fall_2020_17.1_21B74_Restore.ipsw

Other Devices

iPad Pro 3 (11-inch, Cellular)

iPad8,3

iPad 6 (WiFi)

iPad7,5

iPad mini 6 (Cellular)

iPad14,2

How to Restore with This IPSW

iTunes / Finder

macOS & Windows

Download the .ipsw file to your computer.
Connect your iPad Air 4 (WiFi) via USB.
Open iTunes (Windows / macOS Mojave and earlier) or Finder (macOS Catalina+) and select your device.
Update (keep data): hold Option (Mac) or Shift (Windows) and click Update, then pick the .ipsw file.
Restore (erase & install): hold Option / Shift and click Restore iPhone…, then pick the .ipsw file.
Wait for the process to finish - do not disconnect.

Restoring will erase all data on the device. Back up first.

3uTools

Windows

Download and install 3uTools from 3u.com.
Connect your iPad Air 4 (WiFi) via USB and trust the computer on the device.
Go to Flash & JB → Easy Flash.
Click Import and select the downloaded .ipsw file.
Choose Flash mode: Update keeps data, Restore wipes the device.
Click Flash and wait for the progress bar to complete - do not disconnect.

Only flash firmware that matches your exact device model.

DFU Mode

Recovery tip

If your device is stuck in a boot loop or iTunes/Finder does not recognise it, enter DFU mode first, then select the .ipsw file as normal.

iPhone 8 / X and later

Quickly press & release Volume Up
Quickly press & release Volume Down
Hold Side button until screen goes black
Hold Side + Volume Down for 5 s
Release Side, hold Volume Down 5 more s
Black screen = DFU active

iPhone 7 / 7 Plus

Hold Sleep/Wake + Volume Down for 8 s
Release Sleep/Wake, keep holding Volume Down for 5 s
Black screen = DFU active

iPhone 6s and earlier

Hold Sleep/Wake + Home for 8 s
Release Sleep/Wake, keep holding Home for 5 s
Black screen = DFU active