Developer Transition Kit · ADP3,2

Developer Transition Kit · macOS 11.2.2

20D80Signed

Catalog data · Last updated: Oct 22, 2026, 1:00 PM UTC

Restore IPSW for Developer Transition Kit: macOS 11.2.2, build 20D80.

Firmware information

Version: macOS 11.2.2
Build: 20D80
IPSW: Mac restore IPSW, not a macOS installer
Size: 12.76 GB
Release date: Feb 25, 2021, 6:06 PM UTC
File name: UniversalMac_11.2.2_20D80_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_11.2.2_20D80_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-25662650fe071330a8fcfa7f4d0030692d7b005fdadb1891b1ec6e6658bd2cdb978

SHA-1527d331410e16cd8388f05cf3b4443679e965ee6

MD545233fafc715dd498897cc16267340cd