In this video we are going to demonstrate how you perform a hard reset on a Synology router. As a hard reset will return your router back to its factory defaults. Typically you would perform a hard reset if you want to delete all settings and apps, and then reconfigure it from scratch.
Note: While performing a hard reset can be useful if you decide to reconfigure your router from scratch. It will not return the routers firmware to a previous state. Instead it will continue to use the version that was last downloaded. This is in keeping with Synology, who do not recommend that you attempt to downgrade the firmware of your router.