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FIRMWARE DETAILS

macOS 27.0

Build: 26A428Sep 14, 2026Delta OTA
Release CandidateStable

View details

Filename
409aaf39ea9e058708d1f9abd5873c2a55622e1f.zip
File size
16.13 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
b2e5c945d279bea1a21a89985f2257e5746b15fbc63a96b0b19283de59c162f8
SHA-1
Not reported
Required starting builds
21F2092
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 (2)

Unknown
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