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HomeReleasesmacOS 27.0Delta OTA

FIRMWARE DETAILS

macOS 27.0

Build: 26A428Sep 14, 2026Delta OTA

Release CandidateStable

View details

Filename: c695c97666aed3d07d853b536461e2f1ae847b9b.zip
File size: 12.44 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: 742c26fec44400b34ca99522b64a3fa02bf36a022b2e2ee600024e633a2144a4
SHA-1: Not reported
Required starting builds: 25D2125
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 (7)

MacBook Air (13-inch, M5) Mac17,3

Unknown

MacBook Air (15-inch, M5) Mac17,4

Unknown

MacBook Neo Mac17,5

Unknown

MacBook Pro (14-inch, M5 Max) Mac17,7

Unknown

MacBook Pro (14-inch, M5 Pro) Mac17,9

Unknown

MacBook Pro (16-inch, M5 Max) Mac17,6

Unknown

MacBook Pro (16-inch, M5 Pro) Mac17,8

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

12.44 GB

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Download from Apple

File typeDelta OTA

Link availabilityNot verified

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

How downloads work