Reading Flash Image on Xavier

Previously when I would backup the TX2 using flash.sh I used the command line below

sudo ./flash.sh -r -k APP -G tx2-backup.img jetson-tx2 mmcblk0p1

What are the correct parameters for the Xavier?

See:
https://devtalk.nvidia.com/default/topic/1039548/xavier-cloning/
(the short answer is that NVIDIA is working on it)