Problem interfacing UART camera

Hello, I have bought a camera to work via Arduino. Unfortunately, It doesn't have a name or model number. But it is very similar to the adafruit VC0706 camera module. It has a UART communication interface and there is a chip on it named: Vimicro VC0703NLEB.
I have searched the internet and tried out many solutions including:

adafruit camera tutorial
Instructables camera tutorial
Youtube camera issue help

I still can't use my camera. The 'snapshot' example says: No camera found and also the 'CommTool' application gives a Cmd time out message when I hit the 'Get version' button. Here are the files I have used:

Adafruit camera library
CommTool application

Also, I have attached photos of my module.

Could anybody help this?

thanks a lot