I followed the Samsung provided instructions for how to update firmware on my TV. They said to go into the menu using the remote control, then support, then software upgrade. After following those steps on my TV, it connects to the network to check for updates and it says no new updates are available. I'm using firmware 001021 on a Samsung 6300 series LED smart TV (UN40D6300SF). I just tried the Youtube App on the Samsung Smart Hub again and it has the same problem. I have to go to youtube.com/activate every time I use the program to login. Before it remembered my login information.