FIRMWARE DETAILS
macOS 27.0.1
Build:
26A434Sep 28, 2026Delta OTAStable
View details
- Filename
0a48d12fe4e20752686f0bdf1badaaa052f5ede1.zip- File size
- 16.12 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
fd864795c01bfd17fba2e8c17d976913273d5c1c316f0b4167118775411c63af- SHA-1
Not reported- Required starting builds
21E258- 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 (11)
iMac (24-inch, M1, 2021, Four Ports)
UnknowniMac21,1iMac (24-inch, M1, 2021, Two Ports)
UnknowniMac21,2Mac mini (M1, Late 2020)
UnknownMacmini9,1Mac Studio (M1 Max)
UnknownMac13,1Mac Studio (M1 Ultra)
UnknownMac13,2MacBook Air (M1, 2020)
UnknownMacBookAir10,1MacBook Pro (13-inch, M1, 2020)
UnknownMacBookPro17,1MacBook Pro (14-inch, M1 Max, 2021)
UnknownMacBookPro18,4MacBook Pro (14-inch, M1 Pro, 2021)
UnknownMacBookPro18,3MacBook Pro (16-inch, M1 Max, 2021)
UnknownMacBookPro18,2MacBook Pro (16-inch, M1 Pro, 2021)
UnknownMacBookPro18,1Signing 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