Ensure your computer is connected to the LAN port and has a solid Ethernet connection.
If you want to ensure the update goes smoothly, let me know: tenda d810r firmware update
If you run into issues during or after the firmware upgrade, use these quick troubleshooting tips: Ensure your computer is connected to the LAN
Unplug the power cable from the router, wait 30 seconds, and plug it back in. The Network is Slow or Unstable Post-Update wait 30 seconds
Visit the Tenda Download Center to find the specific firmware file for your hardware version.
Take screenshots of your current ISP settings (VPI/VCI) in case the update wipes your configuration.