If you want to reset your V380 IP Camera to factory defaults, you can use the following 3 Steps. After resetting the device you will lose all your settings except Client Settings.
Hard reset / By pressing the RESET button
Keep the device powered on for at least 30 seconds to complete its normal startup.
Find something like a pin to press the Reset button on the camera and hold it for 15 seconds to restore the settings to factory defaults.
Afterwards release Reset button, and the camera will be restored to factory defaults after rebooting.