Skip to content

Browse devices Releases API Data sources

An independent firmware index. Not affiliated with or endorsed by Apple Inc.

Privacy Terms Disclaimer Data sources

Apple Firmware HubClear data. Direct downloads.Apple trademarks ↗

HomeReleasesmacOS 27.0.1Delta OTA

FIRMWARE DETAILS

macOS 27.0.1

Build: 26A434Sep 28, 2026Delta OTA

Stable

View details

Filename: a94169e8fcec2e256913c221d80f4310819f8f17.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: 8bbc8c1dce9ffc45a82dbbfe046fc6471f569ed16cb4c866de8f16bfc9170f6e
SHA-1: Not reported
Required starting builds: 24B2083
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

Your browser connects directly to Apple’s CDN. This site does not store or proxy firmware files.

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