: Click Browse (or Choose File), select your extracted .bin file, and click Upgrade .

: Locate the latest firmware file (often labeled with a date like 181119). These updates often fix 5GHz disconnection issues and VPN bugs. Step-by-Step Upgrade Guide

Never update firmware over a Wi-Fi connection. Use an Ethernet cable to connect your PC to one of the router's LAN ports to avoid a mid-update crash.

: The router will reboot automatically. This usually takes about 3–5 minutes. Do not power off the router during this time. Benefits of the V4 Firmware Update