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
You will be prompted to log-in. The default username is "admin" and the password is "admin" (unless you have changed these prior).
Click on "Firmware Upgrade" on the left menu
Click on "Upgrade" and press "OK" to confirm. The upgrade process will now begin and take up to 5 minutes to complete.