Use an Ethernet cable to connect your computer to the router. Updating over Wi-Fi is risky as a connection drop can "brick" the device. Stable Power:
If the downloaded file is a ZIP archive, extract it. The actual firmware file should have a extension. 2. Accessing the Router Interface Update Software in TOTOLINK ND300V2
Download the latest version and unzip it; the correct upgrade file will typically have a .web or .bin extension. Step 2: Access the Router's Web Interface Use an Ethernet cable to connect your computer to the router