WayneWWW told me to create an image with a default account and password and use that image to do mass flashing.
I do not see anything that would prevent from doing so.
I’ve never mass flashed, I couldn’t tell you anything useful for that.
However, if I were to guess, then perhaps you could place a loopback mounted copy of your image (the raw format, not the sparse one) on “
Linux_for_Tegra/rootfs/”. Then flash would use that as the content to create a new filesystem from. This would result in the image being edited, but this would only be the boot content and not the rest of the image (just make sure your actual original clone image is protected somewhere).