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iMac 24-inch (M1, Four Ports, 2021)
Mac· IPSW RESTORE

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

iMac21,2
Catalog data · Last updated: Oct 22, 2026, 3:01 PM UTC

Choose an IPSW version for iMac 24-inch (M1, Four Ports, 2021) (iMac21,2) and check its signing status before downloading.

This is Mac restore firmware, not a regular macOS installer. The restore steps depend on the model.

Firmware list

Device / VersionSigning statusSizeRelease date
Signed
24.81 GB9/28/2026
Signed
24.8 GB9/14/2026
Signed
18.41 GB8/17/2026
Signed
18.41 GB8/6/2026
Signed
18.41 GB7/27/2026
Signed
18.41 GB6/29/2026
Signed
18.41 GB6/1/2026
Signed
18.41 GB5/11/2026
Signed
18.38 GB4/9/2026
Signed
18.38 GB3/24/2026
Signed
18 GB3/4/2026
Signed
17.58 GB2/11/2026
Signed
17.45 GB12/12/2025
Signed
17.43 GB11/3/2025
Signed
17.01 GB9/29/2025
Signed
17.01 GB9/15/2025
Signed
15.66 GB8/20/2025
Signed
15.66 GB7/29/2025
Signed
15.72 GB5/12/2025
Signed
15.65 GB4/16/2025
Signed
15.65 GB3/31/2025
Signed
15.4 GB3/11/2025
Signed
15.4 GB2/10/2025
Signed
15.4 GB1/27/2025
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