Since Qualcomm drivers are not always Microsoft-signed, you must reboot Windows into “Disable Driver Signature Enforcement” mode (Shift + Restart -> Troubleshoot -> Startup Settings).
The Qualcomm Flash Loader V10 is a software tool designed to flash firmware on Android devices powered by Qualcomm chipsets. It's commonly used to restore a device to its stock firmware, update to a newer version, or fix software-related issues. qualcomm flash loader v10 top download