Never update firmware over Wi-Fi. A single packet loss can corrupt the update. Use an Ethernet cable between your computer and the Tenda D301’s LAN port. Disable Wi-Fi on your computer temporarily to ensure the wired connection is primary.
Look at the sticker on the bottom or back of your router to find the hardware version (e.g., V2.0 or V4.0). Visit the official Tenda Download Center and search for " The download is usually a file; extract it to find the firmware file. Step 2: Access the Router Interface Connect via Ethernet: tenda d301 firmware update work
If your D301 is functioning properly without issues, you may not need the latest firmware. Only update if you are experiencing specific problems (e.g., disconnections, Wi-Fi drops) or if a security vulnerability has been patched. Never update firmware over Wi-Fi