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

MacBook Pro (M1 Max, 16-inch, 2021) · macOS 26.3

25D125Signed

Catalog data · Last updated: Oct 22, 2026, 7:46 PM UTC

Restore IPSW for MacBook Pro (M1 Max, 16-inch, 2021): macOS 26.3, build 25D125.

Firmware information

Version: macOS 26.3
Build: 25D125
IPSW: Mac restore IPSW, not a macOS installer
Size: 17.58 GB
Release date: Feb 11, 2026, 6:32 PM UTC
File name: UniversalMac_26.3_25D125_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_26.3_25D125_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-2567d22296ca6ab46f255bed8f5fc80845edab14fb781f845d7cae9427a22970b53

SHA-1a51bc838db265ca2cfcd68681953b7a375b56fba

MD5e919e46072c8df928c45bf8b552b710b