Samsung should walk you through the firmware update if need be, the need for the distance to be under 20 feet and such.
Wired is preferred.
I have a Samsung 3d smart tv. At least once a day the Internet drops. It is connected through WIFI with XFinity. We just got a brand new router and it's still dropping internet. When we go into settings it forgets what our network is, then 10 minutes later will reconfigure... help!