I have a LG CX with firmware 04.40.70. Since the update I had a lot of wifi problems. I thought the wifi module on the TV died.
After a month I saw in the TV settings that the TV sometimes connects to the router but does not go to the "DNS".
On my network, the router takes care of DNS, so I entered a public DNS 9.9.9.9 in the TV's network settings instead, and all my wifi problems disappeared.
But that's not the only problem I've had since the update. The web browser no longer works properly. But at least I found a solution to the wifi problem, maybe that will help someone else.
