The tool will not work over Wi-Fi or Ethernet. Your printer must be connected via a high-quality USB cable.
This tool is designed for Windows (XP, 7, 8, 10, and 11).
The Service Tool cannot detect your printer if it is in normal standby mode. Follow these steps carefully: Turn off your printer (but leave it plugged in). Press and hold the button. While holding Stop/Reset, press and hold the Power button. Keep holding Power, then release the Stop/Reset button.