FIRMWARE DETAILS
macOS 27.0 beta 4
Build:
26A5388gJul 20, 2026Delta OTABeta
View details
- Filename
554d6b4a8e23d6c1fc6fed82bba608f421d0264b.zip- File size
- 14.90 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
db1209b9179a5c34bba60469c323b5163995a04f9d06f182c4b0769e15febd40- SHA-1
554d6b4a8e23d6c1fc6fed82bba608f421d0264b- Required starting builds
22H722- 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 (27)
iMac (24-inch, M1, 2021, Four Ports)
UnknowniMac21,1iMac (24-inch, M1, 2021, Two Ports)
UnknowniMac21,2Unknown
Unknown
Mac mini (M1, Late 2020)
UnknownMacmini9,1Mac mini (M2 Pro, 2023)
UnknownMac14,12Mac mini (M2, 2023)
UnknownMac14,3Mac Pro (2023)
UnknownMac14,8Mac Pro (Rack, 2023)
UnknownMac14,8Mac Studio (M1 Max)
UnknownMac13,1Mac Studio (M1 Ultra)
UnknownMac13,2Mac Studio (M2 Max, 2023)
UnknownMac14,13Mac Studio (M2 Ultra, 2023)
UnknownMac14,14MacBook Air (15-inch, M2, 2023)
UnknownMac14,15MacBook 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
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%3B26A5388g.json ↗
MIT — copyright 2022 emiyl
Last imported: Oct 19, 2026, 10:56 PM UTC
Record fingerprint: cc2239570692061e638b6f62097220b1