After flash the Jetson will reboot automatically. This is when your screenshot will show up. You have to do first boot setup, and if not using a GUI, then you would use serial console. See:
http://www.jetsonhacks.com/2017/03/24/serial-console-nvidia-jetson-tx2/
If you don’t have a serial console cable, then you could take advantage of a script to set this up prior to flash. See:
https://forums.developer.nvidia.com/t/jetson-nano-all-usb-ports-suddenly-stopped-working/75784/37
What it comes down to is that optional extra packages are installed via ssh, and that unless there is an ssh account, then there is no way to log in and finish optional package install.