A603 usb ports not working when flashed jetson nano Orin with nvidia sdk to memory card

Hi, I have successfully flashed jetson nano Orion 8gb board with nvidia sdk, once I replace the Carrie board to a603 from the original jetson board. The usb on ports are not working but the hdmi is working and it boots up fine. Is there a way to enable them.

And my 2nd question is can I directly flash to sd card instead of nvme procedure that’s shown in the wiki. If so what is the procedure and commands used for it.

Thank you.