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Home / Devices / iPhone 16 Plus / 24A437

About This Firmware

iOS 27.0 (build 24A437) is an official Apple IPSW for the iPhone 16 Plus, released on 2026-09-14. The download is 11.47 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

iPhone17,4_27.0_24A437_Restore.ipsw

Checksums

SHA-256 a8bed747c08709a63e5b9d55fa87bfca2839245f91a82082a8c30b8833fae149
SHA-1 801ea6d4ee27c44551ec767e5a071a4e787d8bfe
MD5 7437101bd7b650943c1fd40f684184db

Direct URL

https://updates.cdn-apple.com/2026FallFCS/601712cb-7aa9-4914-b421-91d45da959e6/iPhone17,4_27.0_24A437_Restore.ipsw
Download IPSW

Other Devices

iPhone 6s+
iPhone 6s+
iPhone8,2
 iPhone 5s (GSM)
iPhone 5s (GSM)
iPhone6,1
 iPhone 17e
iPhone 17e
iPhone18,5
 iPhone 15
iPhone 15
iPhone15,4
 iPhone XS Max
iPhone XS Max
iPhone11,6
 iPhone 8 Plus (Global)
iPhone 8 Plus (Global)
iPhone10,2

How to Restore with This IPSW

iTunes / Finder

macOS & Windows
  1. Download the .ipsw file to your computer.
  2. Connect your iPhone 16 Plus 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 iPhone 16 Plus 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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