How to backup the OS for a reComputer J1010 so to reflash it easily

Hello,

I have made some customizations on my reComputer J1010 OS, mostly related to serial and usb drivers.

I use the eMMC for the OS and the SD card for the datas.

Is it possible to backup the OS stored on the eMMC in order to reflash it with the process described on your wiki :

Is it enough if i backup the rootfs on a usb drive then use this rootfs to replace the rootfs inside the Linux_for_Tegra folder ?

So with the reComputer connected to the host in recovery mode, I just have to run sudo ./flash.sh jetson-nano-devkit-emmc mmcblk0p1 in order to recover mys customized OS ?

Best

Alex