How can I get my camera working?

[Jaskaranpreet Singh]

I have Micromax A104 (canvas 2 fire). Few days back i got a message while opening the camera "Can't connect to camera". After that the back camera stop working. Then i perform the factory reset from the phone and after reset camera start working. It was working fine until 2 days back and same problem occur. I can do factory reset again and camera may start working but i m tired of it. I want to know if the updates of other apps can cause this problem? Is there any permanent solution to this?