Please follow the steps below:
1) Unplug the power jack, and then press and hold the reset button.
2) Power on the camera. Don’t release the button during the system booting. It will take around 30 seconds to boot the camera.
3) Release the button (remove the pin from the reset hole). The camera should now be back to factory default.
4) Login the camera using the default IP (http://192.168.0.20). Username: admin, password: admin.