Flash system image to Jetson Nano

Dear,

We have a requirement to backup system image to USB stick for later recovery.
I tried and found that this is feasible with rsync.
And I’m wandering: if I have the backup system.img, can I directly flash the system image to the USB stick from a x86 PC with a flashing tool like balennaEtacher? And later by changing the /boot/extlinux/extlinux.conf to boot from USB stick.

Thanks!

Theoretically, you can flash a image to the usb stick.

Long story for you to refer to.