I am also experiencing the same problem, frequent meaningless disconnections. In contact with Imou, they informed me about the software below. Now I have set a fixed IP, I will test it for a few days to see how it goes.
If anyone wants to change the firmware, it is possible through the software provided, if someone has the .bin file of the desired version.
Good luck, everyone."
IMOU's response:
In addition, you can also solve the camera disconnection problem by fixing the IP address of the device. Please download the software
support to your computer, and keep the computer and camera On the same network, you can then follow the video to pin your IP address: