The tool interfaces with devices in EDL Mode (PID_9008). In this state, the device enumerates as a USB device but does not load the Android OS. Tool Master v3.0 detects this VID/PID (Vendor ID/Product ID) combination to initiate the handshake process. For devices with "locked" bootloaders, the tool often employs exploit vectors to force EDL entry or bypass signature verification during the flashing process.
In professional and industrial settings, "Qualcomm Tools" often refer to the official Qualcomm AI Runtime (QAIRT) SDK qualcomm tool master v3.0