FIRMWARE DETAILS

macOS 27.0

Build: 26A428Sep 14, 2026Delta OTA

Release CandidateStable

View details

Filename: e8cd084187a1bcd59c2707a68048a3fce92f1dd3.zip
File size: 14.06 GB
File type: Delta OTA
Download host: updates.cdn-apple.com
Link availability: Not verified
Source reports active
Last link check: Not checked
SHA-256: a1b0491a66ba8fc6ec19e620041df39b00fd691dc80e6a79fad81953c7e5804d
SHA-1: Not reported
Required starting builds: 24A8332
Board restrictions: Not reported

OTA packages can require an exact starting build and board. A matching hardware identifier alone is not sufficient for installation.

Compatible hardware (4)

iMac (24-inch, M4, 2024, Four Ports) Mac16,3

Unknown

iMac (24-inch, M4, 2024, Two Ports) Mac16,2

Unknown

Mac mini (M4, 2024) Mac16,10

Unknown

MacBook Pro (14-inch, M4, Nov 2024) Mac16,1

Unknown

Signing is specific to the device and file. A signed build does not guarantee a downgrade or successful installation.

Source provenance

AppleDBhttps://api.appledb.dev/ios/macOS%3B26A428-RC.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 12:56 PM UTC
Record fingerprint: 8305c639c5a60addec74ac2aabc81374