FIRMWARE DETAILS
macOS 27.0
Build:
26A428Sep 14, 2026Delta OTARelease CandidateStable
View details
- Filename
7d1b3de9b0d0b4c0e250926960e9a8a6e80d2697.zip- File size
- 15.88 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
8f2935d5d184e5896e8a867829f0262d296e796c3f15b55372e613e186cd4850- SHA-1
Not reported- Required starting builds
22D68- 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 (19)
iMac (24-inch, M1, 2021, Four Ports)
UnknowniMac21,1iMac (24-inch, M1, 2021, Two Ports)
UnknowniMac21,2Mac mini (M1, Late 2020)
UnknownMacmini9,1Mac mini (M2 Pro, 2023)
UnknownMac14,12Mac mini (M2, 2023)
UnknownMac14,3Mac Studio (M1 Max)
UnknownMac13,1Mac Studio (M1 Ultra)
UnknownMac13,2MacBook Air (M1, 2020)
UnknownMacBookAir10,1MacBook Air (M2, 2022)
UnknownMac14,2MacBook Pro (13-inch, M1, 2020)
UnknownMacBookPro17,1MacBook Pro (13-inch, M2, 2022)
UnknownMac14,7MacBook Pro (14-inch, M1 Max, 2021)
UnknownMacBookPro18,4MacBook Pro (14-inch, M1 Pro, 2021)
UnknownMacBookPro18,3Unknown
Unknown
MacBook Pro (16-inch, M1 Max, 2021)
UnknownMacBookPro18,2MacBook Pro (16-inch, M1 Pro, 2021)
UnknownMacBookPro18,1Unknown
MacBook Pro (16-inch, M2 Pro, 2023)
UnknownMac14,10Signing 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