Flip the router over. Look for "Ver: X.X" or "VX" (e.g., Ver: 4.0 ) near the serial number.

Updates can resolve known bugs that cause intermittent connection drops or lag during high-bandwidth activities.

Before downloading any files, you confirm you have the V4 hardware. Installing firmware intended for V1, V2, or V3 can permanently damage (brick) your device.

New firmware often fine-tunes wireless signal strength and coverage for better overall throughput. Step 1: Verify Your Hardware Version

Firmware updates often include critical fixes for vulnerabilities, such as a major bug discovered by IBM's X-Force Red that could allow attackers to take full control of the router.