Check every 6–12 months. Security updates are critical. If no new updates exist, your router is likely end-of-life. Consider replacing it after 5–6 years.

If you can get shell access (telnet/SSH, often disabled by default):

Performing a is not just a recommended maintenance task; it is essential for cybersecurity, connection stability, and unlocking new features. Unfortunately, many users ignore firmware updates until something goes wrong—intermittent disconnections, sluggish Wi-Fi, or worse, a security breach.