During the update process, make sure that you do not interrupt the process by various activities such as opening a new tab on the current browser, clicking on the hyperlink of an opened browser, switching to the desktop screen, closing the current browser, and turning off the opened screen. Interruption in the update process can lead to failure in the firmware update process of your dlinkrouter.local device. A user can also restore the former firmware through the Firmware Restoration feature of the web interface of a Dlink Router.
Dlinkrouter.local- D-link router installation and setup Guide