FIRMWARE DETAILS
macOS 27.0
Build:
26A428Sep 14, 2026Delta OTARelease CandidateStable
View details
- Filename
f1fbc1bced0b8f7d75bf5e6ad201e7df814c7fc11d408555f3022bf6189a06f9.aea- File size
- 13.96 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
ae04cbcf2ad72dc5f51f04aef0a89f5569b2e3ed73e6e3b23891adc203c07da4- SHA-1
Not reported- Required starting builds
24C2101- 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)
MacBook Air (13-inch, M4, 2025)
UnknownMac16,12MacBook Air (15-inch, M4, 2025)
UnknownMac16,13Signing 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