iMac 24-inch (M1, Four Ports, 2021) iMac21,2

IPSW Signed 20F71

macOS 11.4

macOS

Version

11.4

Build ID

20F71

File Size

12.97 GB

Release Date

2021-05-24

Last Updated

2021-05-12

Download IPSW

Beta firmware? Download Here →

About This Firmware

macOS 11.4 (build 20F71) is an official Apple IPSW for the iMac 24-inch (M1, Four Ports, 2021), released on 2021-05-24. The file is served directly from Apple's CDN. This firmware is currently signed by Apple, so it can be used to restore or update your device via iTunes or Finder.

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

Filename

UniversalMac_11.4_20F71_Restore.ipsw

Checksums

SHA-256 bb92e1404a69d139653354f3ed7554aca2d9aa568a003b8db15f40a9433f3356

SHA-1 b46f3a411413078c5235f888971faaafd371091e

MD5 de3d7f7fc64c5e41800b4a2d9dcadfa6

Direct URL

https://updates.cdn-apple.com/2021SpringFCS/fullrestores/071-00710/AB478B0E-D78C-4DFE-9BDA-5497969A5272/UniversalMac_11.4_20F71_Restore.ipsw

Other Devices

How to Restore with This IPSW

iTunes / Finder

macOS & Windows

Download the .ipsw file to your computer.
Connect your iMac 24-inch (M1, Four Ports, 2021) 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 iMac 24-inch (M1, Four Ports, 2021) 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