1. First, make sure that Konka Multifunction Player is connected to the TV or monitor and turned on.
2. Then, press the "Menu" key on the remote control to enter the main menu.
3. Use the arrow keys to scroll down, find the "Settings" option, and then press the "OK" key to enter the settings menu.
4. In the setting menu, find the option of "Restore factory settings" and press "OK" to enter.
5. In the pop-up confirmation box, select Yes and press OK to confirm.
6. Wait for a period of time until Konka Multifunctional Player automatically restarts and restores the factory settings.
7. After the factory settings are restored, you need to reset the language, time zone, network and other options of Konka multi-function player.