Before setting up the VLAN 600, I could see the WiFi status with all devices connected with WiFi. After setting up the VLAN 600 and reboot the router, no more WiFi.
It is possible to set up VLAN 600 using WiFi with this device so that I could connect Unifi TV using WiFi instead of LAN, just like this:
Since I don't see second SSID option in DSL-N16 so I tried using "Guest Network" but still I couldn't set WiFi VLAN 600. Can you help?
Can you try downgrading the firmware to the previous version? It just like normal manual firmware update. Do check whether the problem still persist after the downgrade.