USB C Ports Jetson AGX Xavier stopped working

Hi linuxdev,

thanks for explaining the USB possibilities to connect the Jetson Xavier to the host machine.
The host machine is actually the machine, on which I installed SDK Manager and flashed the jetson Xavier with.

The file I posted yesterday is the output I recieve in the terminal on Xavier after I entered
dtc -I fs -O dts -o extracted.dts /proc/device-tree
I converted it into a txt file, but by any reason I was just able to upload it as log…

I made my first attempts to backup the Jetson Xaviers image. (I try it with this tutorial) I was able to connect to the Xavier from my host computer with ssh. When I tried to copy the partition mmcblk0p1 with
dd if=/dev/mmcblk0p1 | ssh user@hostpc dd of=/directory/image.raw I recieved the error:
port 22: Invalid argument
Might this be a problem wirh SSHOpenServer? I have it installed on my Xavier. When I tried to configurate SSHOpenServer with
man sshd_config
I got an reply that no manual changes are allowed. Could it be possible, that my filesystem stays in read-only mode after I once set it with
echo u > /proc/sysrq-trigger
in the first steps for the backup with the following code?

Many thanks again for your continouus replies!