Installation on new Odroid N2

I just purchased an Odroid N2+ with a red dot eMMC drive that has ubuntu installed. I’ve tried mounting it to my PC us SPI with the ums command and with an eMMC micro sd reader but I can’t get it to mount or Etcher to recognize it. It boots fine on the N2 and I can see the volumes in petitboot. I would appreciate any advice?

Same problem.
I can’t figure out a way so far.
Let me know if you can make it work.