Steps:
1. Please connect the DVR to a router with a network cable.
2.Enter to the DVR - Desk - Right Click-Main Menu.
3.Click "NETWORK".
4.Please go to Basic to setup ,make sure to enable "DHCP".
5.Click "APP" - "P2P" to see the network status.
If it is online, that means the system has been connected to the Internet successfully. And you can add the device to the mobile app or a computer software to remotely view cameras.
If it says can't connect to Internet, please try the following methods:
1. Please check if the indicator light of the network port on the back of the DVR is twinkling.
2. Please try to use another network cable or connect the DVR to another router.
3. Please try to enter system > main menu > CONFIG > Basic, change the DNS server to 8.8.8.8 and click "OK" to save. And reboot the DVR .
4. Please try to disable the UPNP function of the router.
5. Please try to enter the below link to see how to update the DVR.
http://www.tontonsecurity.com/download/page_show_121.html