How to restore firmware backup?

[Nord221]

Hi,

I was reading the FAQ in the wiki on how to restore the original firmware but I do not quite understand how to perform this restore process.

The backup that I made during the thingino installation is a folder with 20 files in it. Below is the folder content of it.

Below is the excerpt from the wiki:
Place the original stock firmware backup file on an SD card and name as autoupdate-full.bin. Insert the card with the file into the camera and reboot.

How do I get an autoupdate-full.bin file from this backup folder in order to restore my Wyze V3 device?

[themactep]

Linux?

cat mtd0.bin mtd1.bin mtd2.bin mtd3.bin mtd4.bin mtd5.bin mtd6.bin mtd7.bin > autoupdate-full.bin