Hey,
I am trying to develop a custom firmware for the old Yi4k camera, I have done lots by reverse engineering.
By the way, I am thinking as the camera is not produced anymore, the firmware not updated anymore and the platform old enough if I can get someone who can provide the source code of the Yi4K cam.
Some people are always using it and if I can provide more features whitout hacking it it will be awesome.
If you have any contact, please let me know.
Damien