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FIRMWARE DETAILS

macOS 27.0

Build: 26A428Sep 14, 2026Delta OTA
Release CandidateStable

View details

Filename
f887f31db6f8545c7785f944a89f235bf89096bb73190e3857d14f8fc833ba1a.aea
File size
15.97 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
a9b6e1ff031f34153018132641466f90b36e23efed69351d18d29faff2e222d2
SHA-1
Not reported
Required starting builds
22A8380
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 (6)

Unknown
Unknown
Unknown
Unknown
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