Apple Service Toolkit - 1.5.3 30 [2025]

Apple Service Toolkit (AST) 1.5.3 30 is a specific version of Apple’s professional software suite used by authorized technicians and service providers to diagnose and repair Apple hardware. Released in March 2023, this update brought several critical enhancements for Mac and iPhone repairs. Key Features of Version 1.5.3 30

Supported macOS Versions (at time of release)

• macOS Catalina 10.15.7
• macOS Big Sur 11.2–11.4
• Early compatibility with Monterey 12.0 beta

• Secure Boot: Medium or No Security
• External Boot: Allow

If you encounter a technician using AST 1.5.3 30, you know they are working on a machine from a specific golden era of Apple design—and they likely possess deep, specialized knowledge to keep that machine running for years to come. Apple Service Toolkit - 1.5.3 30