MacBook Pro (M1 Max, 16-inch, 2021) · MacBookPro18,2

MacBook Pro (M1 Max, 16-inch, 2021) · macOS 15.5

24F74Signed

Catalog data · Last updated: Oct 21, 2026, 6:26 PM UTC

Restore IPSW for MacBook Pro (M1 Max, 16-inch, 2021): macOS 15.5, build 24F74.

Firmware information

Version: macOS 15.5
Build: 24F74
IPSW: Mac restore IPSW, not a macOS installer
Size: 15.72 GB
Release date: May 12, 2025, 5:24 PM UTC
File name: UniversalMac_15.5_24F74_Restore.ipsw
Download host: updates.cdn-apple.com

IPSW download

Check the model and signing status before downloading.

Download IPSW

Download hostupdates.cdn-apple.comUniversalMac_15.5_24F74_Restore.ipsw

Back up before you restore. A restore can erase the data on the device. The identifier has to match, and a file you can download may still be rejected for restore. This is Mac restore firmware, not a regular macOS installer. The restore steps depend on the model.

Checksum

SHA-256e14517c33c70b4b7cd4f2b1c770284eea242e9da0e3b86464fb7bcb8cae399ee

SHA-19f700c4af3994f17f15c62e07e88d95d3a6d643f

MD50812c5e642ea38e19bbfe7fafa9f7d6f