Devices are typically put into "Diagnostics Mode" by holding Option-D (Intel) or using the Power Button (Apple Silicon) during startup. ⚠️ Important Note
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
Tests cycle count, capacity, and overall battery performance. Devices are typically put into "Diagnostics Mode" by