You must know all the precautions that a user must take before performing the Firmware update process in his Tp-link router. You must read the release notes of new firmware so that you come to know of the configuration settings that are going to be removed after the update process. You can restore the settings after the Firmware update to avoid yourself from reconfiguring the router. You can perform the recovery process of the settings through the tplinkwifi.net window of your Tp-link router.