AGX Xavier SDK components installation Problem

Host:
ubuntu18.04
typeC 2 USB connected with device
Jetpack Version: 4.3、4.23

Describe of Problem:
After flash, I have completed the initial configuration of ubuntu system on may Xavier.
I have start usb-dev mode by conduct following commands on Xavier:
systemctl enable /opt/nvidia/l4t-usb-device-mode/nv-l4t-usb-device-mode.service
service nv-l4t-usb-device-mode start

I confirm that the install dialog’s IP adress, Username and Passport information are correct.

Error:
Could not connect to the target device. Verify that:

  1. The device is connected to this host machine with a USB cable.
  2. Ubuntu ‘System configuration wizard’ is completed on the device.
  3. Jetson’s Ubuntu OS is up and running.
  4. Jetson USB device mode service is started successfully.
  • See readme file in the auto-mounted “L4T-README” folder for more details.

On both host and Jetson, what do you see from:

ifconfig
route

Assuming your login name is “ubuntu”, and that you are using the USB virtual wired ethernet at address “192.168.55.1” can you “ssh ubuntu@192.168.55.1”? Do note that SDKM can be told to use a different ethernet address, but this would be the default.