A failed firmware update can "brick" your router—turning it into an expensive paperweight. To avoid this, follow these preparatory steps carefully.

If you cannot find the firmware on the website, you can email Tenda support at support@tenda.cn or support@tenda.com.cn and request the latest firmware for your specific hardware version.

| Metric | Before Update | After Update | | :--- | :--- | :--- | | Average 4G Download Speed | 28 Mbps | 41 Mbps | | Ping to Google DNS | 68 ms | 52 ms | | Connection drops per day | 4-5 | 0-1 | | Time to reconnect after reboot | 90 seconds | 35 seconds | | Wi-Fi range (2.4 GHz) | 25m | 30m |

Example: If your version is V1.0.0.18 and the website shows V1.0.0.24 , you need an update.

A power interruption during a firmware upgrade is the most common cause of a “bricked” (permanently damaged) router. Always use a UPS or a stable power source when updating firmware.

: Perform a hard reset. Press and hold the physical RST/WPS button on the back for 10 seconds while the device is powered on. To help troubleshoot your specific setup, please share:

Ensure your router and computer will not lose power during the 5-minute update window.

Navigate to your desktop, select the extracted .bin firmware file, and click . Click the Upgrade or Apply button.

Deep Analysis of Firmware Update Mechanisms and Security for the Tenda 4G630 Router

: Ensure your computer is set to "Obtain an IP address automatically" in your network settings.