on the PH3, then plug it back into the wall while still holding the button. Keep holding for 10 seconds until the LEDs flash rapidly. This enters recovery mode.
The is the silent guardian of your wired home network. While updating these adapters is slightly more involved than updating a Wi-Fi router, the process is straightforward when you use the official Tenda Powerline Utility and download the correct file for your hardware version. tenda ph3 firmware
from the wall outlet for 10 seconds.