Question: how to use lg flash tool?
Answer: Step 1 Preparations And Requirements. Download the LG flash tool from lgfalsh.com and extract it on your Windows PC and launch the application. ... 
Step 2 Turn device In to Download mode. ... 
Step 3 Connect Devices. ... 
Step 4 Load KDZ files. ... 
Step 5 remember. ... 
Step 6 Start the process. ... 
Step 7 Final Step.