Please connect an Ethernet cable from your existing modem/router/network in to the port labelled "Internet/WAN" on the back of the D-Link.
Connect an Ethernet cable between port 1 on the back of the D-Link and your computer.
Turn on the router and wait for a few minutes.
Open a web browser and type http://192.168.1.1 in to the address bar.
You will be prompted to log-in. The default username is "Admin" and the password should be left blank (unless you have changed these prior).
Click on "Tools" at the top and then on "Firmware" on the left menu.
Click "Choose File" and select the firmware file that you have been provided.
Click on "Upload" and press to confirm. The upgrade process will now begin and take up to 5 minutes to complete.