What method is used to revert a router's SSID and password to factory settings?

The method to revert a router's SSID and password to factory settings is through a hard reset using a pinhole. This process typically involves pressing and holding a small reset button located on the router for a specified duration, usually around 10 seconds. This action triggers the router to revert all settings back to their original factory state, clearing any personalized configurations, including the SSID and password.

This method is particularly effective because it does not rely on access to the router's software interface or any connected devices. It is a reliable way to restore default settings when access credentials have been forgotten or if the router is not functioning correctly. Doing so is essential when troubleshooting connectivity issues or when preparing to configure a router for a new network setup.

In contrast, other methods like utilizing the router's software interface or a mobile app to adjust settings would require the current admin credentials. Disabling the router temporarily does not reset settings; it merely disconnects it from power or the network without affecting the configuration. Thus, the hard reset through the pinhole is the only option that guarantees a complete return to factory settings.