The QFIL Tool (Qualcomm Flash Image Loader) is a widely-used firmware update utility for Qualcomm CPUs. It operates on Windows and is available at no cost. You can download the most recent version using the link provided below.
Download the latest official version of the QFIL Tool:
Qualcomm_Flash_Image_Loader_v2.0.3.5_for_Windows
Qualcomm USB Driver v1.0.10061.1
Qualcomm_HS-USB_QDLoader_9008_Driver_32bit_64bit