Expand Memory of Jetson TX2 A203v2 Carrier Board

Hello, I have a Jetson TX2 with an A203v2 Carrier Board. Currently, I am using the internal 16GB EMMC memory, with only around 1.6GB remaining. I would like to expand the storage by using an NVME SSD 2242 M.Key. How can I do this? Your assistance would be greatly appreciated. Thank you.

Hi, sorry for the delay.
The PDF below is the method for us to flash the OS to SSD. Maybe is helpful to u