Hi as long its a Hi3516a chip in the camera and imx178 sensor the firmware is the same the firmware is by www.herospeed.net and as far as i can see i think the cameras are made by www.cantonk.com with their logo put on.
Hope that helps
Mark
Hi click this link for latest firmware.
https://www.ipcamtalk.com/showthread.php/6964-5-MegaGixel-1-1-8-quot-low-light-destroyer-for-90?p=109282&viewfull=1#post109282