Updating samsung tv
First, you download the upgrade from Samsung's website.
But, the grayed out option is now solid and I was able to use it. Mainly the one's that show up in the recommended bar (above downloaded apps and below the app store / advertisement window). There are other reasons for the update failures but try the usual and if need be make that phone call to support.
On the screen choose By USB and press OK / Enter.i).
Once you press OK / Enter, the setup will automatically detect the setup file on the USB drive and start the installation.k).
Once you have completed copying the files to the USB drive, connect the USB drive to the USB jack in the TV.
Make sure that the TV is switched off when you connect the USB drive and then Power On. UPDATING LATEST FIRMWARENOTE : Make sure that the TV is not switched off or the USB drive plugged out while you follow the below steps.f).