1.Pls go to system setup-Network setup to make sure the P2P status is online,you can refer to this pictures below to check.
2.Pls go to System Admin-IPC Maintence to select the camera that you want to upgrade,and choose Start.
3.If there is a message shows Failed to check the firmware.You can try more times.
4.Then you can see "Downloading the Firmware"like the picture below shows.It's means camera detect the firmware file and updating.
5.Now,you can see the status shows"Upgrade Succeed",it's means the camera update finished.
When you finished update the camera's fimware version,you can refer to this link below to enhance the camera's video singal.