The 5G Wi-Fi indicator light is constantly yellow, indicating that the 5G Wi-Fi is abnormal. Troubleshooting steps:

1. Access the ER605 WEB interface [Network → WiFi Settings → 5G WiFi] and confirm that "Enable 5G WiFi" is checked;

2. Check the 5G Wi-Fi channel (it is recommended to choose non-overlapping channels such as 36, 40, etc., to avoid conflicts with surrounding devices);

3. Restart the ER605 and observe whether the indicator light turns yellow and flashes (normal working state);

4. If the issue persists, you can reset to factory settings and reconfigure the 5G Wi-Fi.