About M1E VCOM port

696

1

2017-04-25 18:41

Hi,
I have a two M1E phones.
One of A version and one Y version software.

My Y version phone is not activating preloader  VCOM port when plugin usb cable only charging battery displaying.
My A version phone is VCOM port working properly.
Can you help me about VCOM port about Y version M1E.
Best Regards.