You can try to contact the website you bought the hidden camera from , they have to give you tech support for it , or give you a number of someone who can .
The 8 dip switches in the back , are they all in the same group . if that is so , then its the camera id - each 1 has on and off ,
if you turn 1 on it will give you id 1 , if you put 1 and 4 on you will get 9 and that would be the new camera id .