Firmware serves as the soul for your D-Link router firmware updates. And just like you like keeping yours refreshed, you are required to keep your router’s firmware updated as well. Firmware is the essential ingredient that helps your router perform seamlessly while giving you complete control over what goes inside and out of your internet connection. Keeping it updated will let you keep the router functioning at its best at all times. However, leaving it outdated can incur a great deal in terms of data security and device performance.