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Download iMac (24-inch, M1, 2021, Two Ports) IPSW — Build 23J511

Identifier: iMac21,2  ·  All firmware links redirect directly to Apple's official servers.

✓ This firmware is signed. This means that you can restore to it in iTunes.

Release Date: 13th April 2026
Upload Date: N/A
Filename: cfe12e109f3f94b45926b9d27509e0b9293a5692.zip
Filesize: 12.70 GB
SHA256sum: fa82219ef798f0a9bd83bb2ad890aa04f79e652d5a7b1472b441a2caac8340ee
MD5sum:
SHA1sum: e4ba6ece838e3394dae7dc573c2eca097249df1a
Identifier: iMac21,2

🔒 Secure download – redirects to Apple.com

Download (12.70 GB)

How to Install?

Before installing make sure to follow these steps given below

Step 1 - Backup your data before installing IPSW

Step 1

Backup your data

Make sure you have backed up your device using iCloud or iTunes on your PC or Mac. Otherwise, you may lose your data.

Step 2 - Connect your Apple device via USB

Step 2

Connect your device

You can connect your device using a Lightning or USB-C cable to your PC or Mac.

Step 3 - Turn off Find My iPhone before restore

Step 3

Turn off Find My

On your device, go to Settings - [your name] Find My - Find My iPhone/iPad, then turn off the Find My iPhone/iPad.

Step 4 - Install the IPSW file using iTunes or Finder

Step 4

Install .ipsw file

In iTunes or Finder (Mac), hold down the Shift key (or the Options key on a Mac) and click on Restore iPhone... button.

Step 5 - Restore your backup after IPSW installation

Step 5

Restore your backup

After iTunes has installed the .ipsw file on your device, follow the on-screen instructions to restore your data.