If you want, I can draft a short step‑by‑step blog post formatted for publication (with screenshots placeholders) — tell me the tone (technical, casual, or beginner-friendly).
Since Tenda often discontinues support pages for legacy ADSL devices: Tenda D301 Firmware Update
Double-check that your Ethernet cable is plugged in securely. Post-Update Tips If you want, I can draft a short
What Is Firmware And Why Firmware Updates Matter - EIRE Systems If you want