Atom cam2 could not be backup

[m-atusi]

Thank you for providing the useful tool.

BTW, I'm an owner of Atom Cam2(t31x) and I tried to backup a stock(original) firmware at first based on "README_backup.md".
But I could not do it. It seems that it was nothing to happen. There was no file on the backup directory.

When I inserted a microSD card to my device then I turned on it, an LED on the camera lit by orange for a short while.
However after that the camera lit off and it was no reaction.

Would you please let me know what should I do next?
I would appreciate if you give an advice.

P.S.
I can use mnakada/atomcam_tools normally by using the same microSD card so the card would not be corrupt.
I also attached a dmesg on Atom Cam2 by way of atomcam_tools to make sure.
dmesg.txt

[archandanime]

Hi! Sorry for the very late reply. I took a break from Github for a few months and just came back. It's late but I hope I would still be able to help.
Are you still having troubles with backing up your camera partitions?