Ways to reset TP-Link Deco X20 to factory defaults:
1. Login to your router management.(Usually located at 192.168.1.1)
2. Navigate to Management -> Settings -> Restore defaults
1. Find the reset button, located on the back of the router.
2. Press and hold the button for at-least 5 seconds. The leds will blink when the reset
To find out your router default username and password continue reading