Flash to USB on Non-Jetson Device without ORIN NX 16GB Connected

Robotics & Edge Computing Jetson & Embedded Systems Jetson Orin NX
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ubu@ubu-Legion-5-Pro-16ACH6H:~/Downloads/defaultbsp/sources_orin/Linux_for_Tegra/tools/kernel_flash/images/external$ ls
boot.img               kernel_tegra234-p3767-0000-p3509-a02.dtb
esp.img                mbr_9_0.bin
flash.cfg              recovery.img
flash.idx              system.img
gpt_primary_9_0.bin    system.img.sha1sum
gpt_secondary_9_0.bin  tegra234-p3767-0000-p3509-a02.dtb.rec
ubu@ubu-Legion-5-Pro-16ACH6H:~/Downloads/defaultbsp/sources_orin/Linux_for_Tegra/tools/kernel_flash/images/external$ cat system.img.sha1sum 
34e163be8e43c5631d8b92e9c43ab0bf0fa62b9c
ubu@ubu-Legion-5-Pro-16ACH6H:~/Downloads/defaultbsp/sources_orin/Linux_for_Tegra/tools/kernel_flash/images/external$ sha1sum system.img
34e163be8e43c5631d8b92e9c43ab0bf0fa62b9c  system.img
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There is no update from you for a period, assuming this is not an issue any more.
Hence we are closing this topic. If need further support, please open a new one.
Thanks

Is this the full log shown?
Can you attach everything outputted since you run the command?

What if you take out --external-only?
Does trying with a different USB drive make any difference?