. Installing firmware meant for other versions (like v4.0) will cause failure Settings Backup:
Before downloading or installing any files, read these rules to prevent permanent damage (bricking) to your router:
Firmware is often downloaded as a .zip or .rar file; you must extract it using tools like WinRAR or 7-Zip to get the .bin or .trx file needed for the update. Step-by-Step Update Process
Never flash router firmware over a wireless Wi-Fi connection. If the Wi-Fi signal drops for a split second during the installation, the firmware file will corrupt, destroying the router's operating system.
Click "Upgrade" . A warning box will appear: "Do you want to upgrade the firmware? The router will reboot automatically. Continue?" Click OK .
Patches critical vulnerabilities that protect your network from unauthorized access and malware.