Never perform a firmware upgrade over Wi-Fi. A momentary drop in the wireless signal can corrupt the installation. Connect your computer directly to the router's LAN port using an Ethernet cable.
: Navigate to the "Advanced Settings" or "System Tools" section, where you should find the "Firmware Upgrade" or "Upgrade" option.
After extensive cross-referencing with legacy Tenda firmware archives and user reports, is most strongly associated with the Tenda W316R or the Tenda W308R (and potentially the W300D series). These are older, entry-level N300 routers (2.4 GHz only, 300 Mbps).
You know the upgrade is complete when the power LED stabilizes (not blinking) and you can ping 192.168.0.1 .
By following these steps, you can ensure your Tenda device is running with the latest features and security patches.