Wrong answer. I have a linux image with support for eMMC, Wifit/BT and GbE.
Perhaps you could try and see if it works for you. The instructions worked with the help of https://github.com/laserk
He successfully followed the steps and got it working, was not just me.
If you have a linux box, try it.
Follow the steps: https://github.com/avafinger/bpi-m64-firmware
Good luck