Reports on the Tenda D301 firmware indicate that while there have been critical security vulnerabilities identified, official updates can be scarce due to the device's End of Life (EOL) status in several regions. Critical Security Alert A significant vulnerability was reported in January 2026 affecting Tenda D301 and D151 routers. Vulnerability Type: Unauthenticated configuration download via the /goform/getimage

The interface may vary slightly depending on your current firmware version, but the steps are generally:

If the power went out during the update, or if you uploaded the incorrect firmware version, the router might become unresponsive.

Alternatively, if you are looking for a complete network upgrade, I can compare the D301 to newer Tenda Wi-Fi 6 models.

Once the update is complete, verify that the new firmware version is installed:

Connect your computer to the Tenda D301 using an Ethernet cable. Never update firmware over Wi-Fi.