I am stuck at Step 9 getting the phone into EDL mode. The phone is LG K40 LM-X420AS. I power it off, hold volume - button, plug-in the cable and nothing happens. Phone starts charging and does not enter into EDL mode. I am able to get into Firmware download mode (Volume + and cable) and also can get into "Factory data reset" mode (Volume - and Power, and then release and hold Power on vibrate). MediaTek USB device does not show up in libusb device selection window.