Why the usb connection between my host and AGX Xavier is missing after flashing the Xavier

I use Jetpack 4.3 and have finished Jetson OS flashing step. However, when I try to install the SDK component on the Xavier, it appears (on SDK manager):

"Could not detect Nvidia Jetson device connected to USB. Verify that:

  1. is connected to this host machine with a USB cable.
  2. Jetson’s Ubuntu OS is up and running.
  3. Ubuntu ‘System configuration wizard’ is completed on the device.
    This can be validated by running the ‘lsusb’ command on your host, and look for “0955:7019” (NVIDIA Corp). "

And when I run ‘lsusb’ command on my host, I cannot find “0955:7019” (NVIDIA Corp).

The USB connection is OK when flashing the Jetson OS.

When running “ip config” on host, it displays:

ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.108 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::1f92:bb95:75b5:3246 prefixlen 64 scopeid 0x20
ether 00:0c:29:2d:4a:3c txqueuelen 1000 (Ethernet)
RX packets 41801 bytes 39171989 (39.1 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 7520 bytes 1658159 (1.6 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10
loop txqueuelen 1000 (Local Loopback)
RX packets 1326 bytes 176174 (176.1 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1326 bytes 176174 (176.1 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

During the flash only the recovery mode USB is used…this means the Jetson becomes a custom device. It isn’t until after flash completes and the unit reboots to full operating system that extra packages are added over the networking. This failure is one of not seeing the Jetson in recovery mode. Are you using a VM? Is the Jetson in recovery mode?

The USB connection is OK when flashing the Jetson OS.
After the flash, you still need to connect the micro usb cable on tegra and tegra should have an network interface generated as 192.168.55.x.

You should give sdkmanager this IP and actually the phy is still through USB.