macOS 15.1 beta
Build 24B5077a
No Longer Signed
iMac (24-inch, M3, 2023, Four Ports)
Mac15,5
Released
October 15, 2024
File Size
Filename
No firmware file found on Apple's servers
Important Notice About Signing Status
Signing status was last updated less than a minute ago. Apple can stop signing at any time without notice.
Beta Firmware Notice
For official public releases, visit IPSWDL.com
Firmware Details
| Device | iMac (24-inch, M3, 2023, Four Ports) (Mac15,5) |
|---|---|
| OS Type | macOS |
| Version | 15.1 beta |
| Build ID | 24B5077a |
| Release Date | October 15, 2024 |
| Signing Status |
Unsigned
Status last checked March 10, 2026.
Verify at IPSW.dev
|
| Filename | Not available |
| File Size | |
| Download URL | No file found on Apple's servers |
Installation Instructions
How to install this firmware
- Download the IPSW file.
- Connect your device to your computer.
- Open iTunes (Windows / macOS Mojave and earlier) or Finder (macOS Catalina and later).
- Hold Option (⌥) on Mac or Shift on Windows and click Check for Update or Restore.
- Select the downloaded IPSW file and follow on-screen instructions.
This version is not currently signed by Apple.
Installation will fail unless you have saved SHSH blobs and are using futurerestore.