Herein lies the biggest challenge. It is part of the proprietary QPST package or embedded within OEM factory flashing tools (e.g., Xiaomi MiFlash, Oppo MSMDownloadTool, OnePlus EDL Tool).
The Qualcomm Flash Loader, technically part of the suite and specifically the Qualcomm Flash Image Loader (QFIL) application, is a robust utility designed to flash firmware images onto Qualcomm devices via EDL mode. qualcomm flash loader v10 top download