1. First time that should you do is Power Off your LG Smartphone.
2. Or you can Remove battery out from your phone, if your device is removable battery
3. Plug USB cable to your PC,
4. Press and Hold volume UP Button, while plugs in USB Cable from PC to your Phone.
5.Then will appear white note (download mode) on your LG phone, if you see this you can releasa Volume UP button.
6.Press and hold volume UP Button on your LG phone again, until you see FIRMWARE UPDATE message.
wait boss muhang may kdz file aq nyan