read out of firmware from a noname board

[Deali]

i am using china made ipc-boards in my self-made cameras. They work ok so far, but i bought a newer one and the firmware has a higher level. But i can´t get the firmware as a file for download. So i am looking for a way to retract the firmware from the newest board and save it to a file to then burn it on older boards. Is there a software to read firmware to a file?
I am using boards like this: 1/2.8'' SONY IMX222 IP Camera ONVIF P2P 1080P Camera IP 2MP

 

[alastairstevenson]

If you have telnet access to the running environment, you could probably copy the flash partitions out and see how they are organised with a view to re-applying them elsewhere.
I doubt board like that have much in the way of tamper protection or other barriers.