iPhone 12 Pro Max iPhone13,4

IPSW Unsigned 21G80

iOS 17.6

iOS

Version

17.6

Build ID

21G80

File Size

7.42 GB

Release Date

2024-07-29

Last Updated

2024-07-23

Download IPSW

Beta firmware? Download Here →

Want full hardware specs? View iPhone 12 Pro Max specs →

About This Firmware

iOS 17.6 (build 21G80) is an official Apple IPSW for the iPhone 12 Pro Max, released on 2024-07-29. 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

iPhone13,4_17.6_21G80_Restore.ipsw

Checksums

SHA-256 311387816a7fc06061a17a5b2de6bad3e96066b9899a54362cae130fd62e9e84

SHA-1 cf5b14d12a27ed30b804a99f5c0d4d64b350dfe1

MD5 64b7d3cbd747fe77a8e097adc49d5e86

Direct URL

https://updates.cdn-apple.com/2024SummerFCS/fullrestores/062-44450/12490068-F67E-44B8-95D7-0ADE4933FA0C/iPhone13,4_17.6_21G80_Restore.ipsw

Other Devices

iPhone 4 (GSM / 2012)

iPhone3,2

How to Restore with This IPSW

iTunes / Finder

macOS & Windows

Download the .ipsw file to your computer.
Connect your iPhone 12 Pro Max 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 iPhone 12 Pro Max 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