I cloned the image using flash.sh script as follows:
sudo ./flash.sh -r -k APP -G my_backup.img jetson-agx-xavier-devkit mmcblk0p1
I then “re-flash” my cloned image using:
sudo ./flash.sh -r jetson-agx-xavier-devkit mmcblk0p1
I used the following as a reference for the above cloning process: