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HomeReleasesmacOS 27.0.1Delta OTA

FIRMWARE DETAILS

macOS 27.0.1

Build: 26A434Sep 28, 2026Delta OTA

Stable

View details

Filename: 4d5a70c299257e97ca144978dd1e6f9c7836e33f.zip
File size: 13.98 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: a2536728f481d73f6f767b69babc97c7c4f156a1f9ea58dfce71ac0e3a366fb9
SHA-1: Not reported
Required starting builds: 24B2091
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 (9)

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

Unknown

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

Unknown

Mac mini (M4 Pro, 2024) Mac16,11

Unknown

Mac mini (M4, 2024) Mac16,10

Unknown

MacBook Pro (14-inch, M4 Max, Nov 2024) Mac16,6

Unknown

MacBook Pro (14-inch, M4 Pro, Nov 2024) Mac16,8

Unknown

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

Unknown

MacBook Pro (16-inch, M4 Max, Nov 2024) Mac16,5

Unknown

MacBook Pro (16-inch, M4 Pro, Nov 2024) Mac16,7

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%3B26A434.json ↗

MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 10:56 PM UTC
Record fingerprint: 5d74a3439f2c9981faa635c8bbd9b8e8

13.98 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