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.