Question: how to use qfil tool download?
Answer:  Download Stock ROM & unzip. ... 
 if it is, then download the Qfil tool & Install. ... 
 Select Flat Build then click on Programmer Path and select Program file with . ... 
 Click on Load XML & Select Raw Program file. ... 
 Connect Phone Holding Boot key. ... 
 Click on Download to start Flashing.