Apple Service Toolkit - 1.5.3 30 ((hot))

: Using a USB drive containing the AST OS image.

Updated diagnostic tests and procedures for Mac models including the MacBook Pro with M1 Mac mini with M1 OS Compatibility: Improved compatibility for macOS 11 Big Sur macOS 12 Monterey Apple Service Toolkit - 1.5.3 30

Today, AST 1.5.3 is obsolete. Apple has moved almost entirely to , a cloud-based diagnostic system that requires an active GSX (Global Service Exchange) login and a secure connection to Apple's servers. The days of "offline" diagnostics via a USB drive are largely fading. : Using a USB drive containing the AST OS image