Home / Mac / iMac (24-inch, M4, 2024, Two Ports) / macOS 26.3 RC (25D122)
Device

macOS 26.3 RC

Build 25D122
Currently Signed
iMac (24-inch, M4, 2024, Two Ports) Mac16,2
Released
February 4, 2026
File Size
18.88 GB
Filename
UniversalMac_26.3_25D122_Restore.ipsw
Download IPSW

Important Notice About Signing Status

Signing status was last updated 4 hours ago. Apple can stop signing at any time without notice.

Verify current status at IPSW.dev

Beta Firmware Notice

For official public releases, visit IPSWDL.com

Firmware Details

Device iMac (24-inch, M4, 2024, Two Ports) (Mac16,2)
OS TypemacOS
Version26.3 RC
Build ID25D122
Release DateFebruary 4, 2026
Signing Status Signed
Status last checked March 12, 2026. Verify at IPSW.dev
Filename UniversalMac_26.3_25D122_Restore.ipsw
File Size18.88 GB
Download URL https://updates.cdn-apple.com/2026WinterFCS/fullrestores/082-57168/EE47B566-E405-4A7C-B99E-5BBCA418BF73/UniversalMac_26.3_25D122_Restore.ipsw

Installation Instructions

How to install this firmware

  1. Download the IPSW file.
  2. Connect your device to your computer.
  3. Open iTunes (Windows / macOS Mojave and earlier) or Finder (macOS Catalina and later).
  4. Hold Option (⌥) on Mac or Shift on Windows and click Check for Update or Restore.
  5. Select the downloaded IPSW file and follow on-screen instructions.

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