Users must have an active Global Service Exchange (GSX) account to link diagnostic results to serial numbers.
Apple Service Toolkit (AST) 1.5.3 30 is a specific version of Apple’s proprietary diagnostic software suite used by Apple Authorized Service Providers (AASPs) and internal technicians to troubleshoot hardware and verify repairs. While the newer, cloud-based Apple Service Toolkit - 1.5.3 30
As of 2025-2026, Apple has moved entirely to AST 3, which runs a stripped-down version of macOS Ventura or later. AST 3 no longer supports any Mac without a T2 or Apple Silicon chip. Consequently, represents the final bridge to the Intel era. Users must have an active Global Service Exchange
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 AST 3 no longer supports any Mac without
Evaluates the health and life expectancy of hard drives or SSDs.