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

MacBook Pro (M1 Max, 16-inch, 2021) · macOS 13.5.2

22G91Signed

Catalog data · Last updated: Oct 21, 2026, 4:56 PM UTC

Restore IPSW for MacBook Pro (M1 Max, 16-inch, 2021): macOS 13.5.2, build 22G91.

Firmware information

Version: macOS 13.5.2
Build: 22G91
IPSW: Mac restore IPSW, not a macOS installer
Size: 12.01 GB
Release date: Sep 7, 2023, 6:00 PM UTC
File name: UniversalMac_13.5.2_22G91_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_13.5.2_22G91_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-2566891aee0ab0b96695ef16fa53f06bdeda4106f68de516671984eb46ad2e0e3b8

SHA-1699cc7ce2477708b2af91dee53ca5373f25461af

MD5f0b83a52efb553fb058bb42481a51e7d