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About This Firmware

iPadOS 26.3.1 (build 23D8133) is an official Apple IPSW for the iPad Air 11-inch (M3, Cellular), released on 2026-03-04. The download is 9.49 GB and 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 checksums below.

Filename

iPad15,3,iPad15,4,iPad15,5,iPad15,6_26.3.1_23D8133_Restore.ipsw

Checksums

SHA-256 c9917e2c62223edb7fb0e1734a5124feb3643027679b07c045eb7e2ef998218a
SHA-1 5acdf586a63fe49c8e5e5add8b7c85ccdf30e6e7
MD5 4ddd126d3b00237735b201c47c4d2426

Direct URL

https://updates.cdn-apple.com/2026WinterFCS/fullrestores/047-89616/C5FDAFB4-B15A-482B-963E-3E8807692007/iPad15,3,iPad15,4,iPad15,5,iPad15,6_26.3.1_23D8133_Restore.ipsw
Download IPSW

Other Devices

How to Restore with This IPSW

iTunes / Finder

macOS & Windows
  1. Download the .ipsw file to your computer.
  2. Connect your iPad Air 11-inch (M3, Cellular) via USB.
  3. Open iTunes (Windows / macOS Mojave and earlier) or Finder (macOS Catalina+) and select your device.
  4. Update (keep data): hold Option (Mac) or Shift (Windows) and click Update, then pick the .ipsw file.
  5. Restore (erase & install): hold Option / Shift and click Restore iPhone…, then pick the .ipsw file.
  6. Wait for the process to finish - do not disconnect.
Restoring will erase all data on the device. Back up first.

3uTools

Windows
  1. Download and install 3uTools from 3u.com.
  2. Connect your iPad Air 11-inch (M3, Cellular) via USB and trust the computer on the device.
  3. Go to Flash & JB > Easy Flash.
  4. Click Import and select the downloaded .ipsw file.
  5. Choose Flash mode: Update keeps data, Restore wipes the device.
  6. 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

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

iPhone 7 / 7 Plus

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

iPhone 6s and earlier

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