Hi @hyfung
Welcome to the Stereolabs community.
I recommend you try first to use this command to flash the QSPI:
./stereolabs_bsp/Linux_for_Tegra sudo ./flash.sh --no-systemimg -c ./bootloader/generic/cfg/flash_t234_qspi.xml p3509-a02-p3767-0000 internal
If this is successful, you can try again with the full flash script to complete the process.