macOS 11.2.3 (20D91) for Developer Transition Kit
Signed — can be installed
Released Mar 8, 2021
ADP3,2
Download IPSW
UniversalMac_11.2.3_20D91_Restore.ipsw
The file is downloaded directly from Apple’s servers (updates.cdn-apple.com). Large files download faster with a download manager or curl -O.
Verify the file
- SHA256
- 3873efdc08c71af06b8d5ad1d2fda0d509746cc29e568e90732ccbe614af5a9f
- SHA1
- 47409e45ec6d9b6a15d9a49563572914f222104e
- MD5
- 21c98b937bce0285abde8b39d1069409
On a Mac: shasum -a 256 UniversalMac_11.2.3_20D91_Restore.ipsw · On Windows: certutil -hashfile UniversalMac_11.2.3_20D91_Restore.ipsw SHA256
Firmware details
- Version
- macOS 11.2.3
- Build
20D91- Released
- March 8, 2021
- Uploaded
- March 3, 2021
- File size
- 12.77 GB (13,707,047,256 bytes)
- Signing
- Signed
Device
- Identifier
ADP3,2- Board
J273aAP- Platform
t8027- CPID
0x8027- BDID
0x42
How to install macOS 11.2.3 with this IPSW
- Back up your Developer Transition Kit to iCloud or your computer — restoring erases the device.
- Turn off Find My in Settings → [your name] → Find My.
- Connect the device with a cable and open Finder (macOS Catalina or later) or Apple Devices / iTunes (Windows).
- Hold Option (Mac) or Shift (Windows) and click Restore. Choose
UniversalMac_11.2.3_20D91_Restore.ipsw. - Wait — the device restarts several times. Don’t disconnect it until you see the Hello screen.
Stuck on the Apple logo? Put the device into recovery mode first, then restore.