macOS 26.0 RC
Build 25A353
No Longer Signed
MacBook Air (15-inch, M3, 2024)
Mac15,13
Released
September 9, 2025
File Size
18.25 GB
Filename
UniversalMac_26.0_25A353_Restore.ipsw
Important Notice About Signing Status
Signing status was last updated 52 minutes ago. Apple can stop signing at any time without notice.
Beta Firmware Notice
For official public releases, visit IPSWDL.com
Firmware Details
| Device | MacBook Air (15-inch, M3, 2024) (Mac15,13) |
|---|---|
| OS Type | macOS |
| Version | 26.0 RC |
| Build ID | 25A353 |
| Release Date | September 9, 2025 |
| Signing Status |
Unsigned
Status last checked March 11, 2026.
Verify at IPSW.dev
|
| Filename | UniversalMac_26.0_25A353_Restore.ipsw |
| File Size | 18.25 GB |
| Download URL | https://updates.cdn-apple.com/2025FallFCS/fullrestores/093-37294/119120C1-6306-4287-AC2B-0AF964CD0B3C/UniversalMac_26.0_25A353_Restore.ipsw |
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.