Please connect an Ethernet cable from your existing modem/router/network in to the port labelled "Internet/WAN" on the back of the TP-Link.
Connect an Ethernet cable between port 1 on the back of the TP-Link and your computer.
Turn on the router and wait for a few minutes.
Open a web browser and type http://192.168.0.1 in to the address bar.
You will be prompted to log-in. The default username is "admin" and the password is "admin" (unless you have changed these prior).
Click "Advanced" on the top menu.
Click "System Tools > Firmware Upgrade" on the left menu.
Click "Browse" and select the firmware file that you downloaded from the portal.
Click "Upgrade" and press "OK" to confirm. The upgrade process will now begin and take up to 5 minutes to complete.