QFIL Tool ( Qualcomm Flash Image Loader ) is a popular firmware update tool for Qualcomm cpu. It works on Windows and is completely free. You can download the latest version via the link below.

Free Download:

File Name: Qualcomm_Flash_Image_Loader_v2.0.1.9.rar - Latest
Size: 1.9 MB
Download via: Mshare - Mega