Flashing BSP issue on Xavier NX 16GB

Hi @WayneWWW
Actually I successfully flashed the board using

sudo ./install.sh

it got flashed on EMMC. But I need to flash on NVME or SDCARD. I also tried to reflash again for SDCARD and it got no error and flashed successful. But when I start the board it got stuck on NVIDIA logo screen. I think I need to clear the emmc first to reflash for NVME/SDCARD. So if you can guide me on how to do that.

I also tried this thread but it didnt work.

Thanks