SamyGO

I did a USB Software Upgrade to my UN37EH5000FXZA. Now the image is not formatted properly, controller functions, channels, etc, probably displayed on the area off screen. Of course the TV sees a correct upgrade and neither allows a second attempt or downgrading. Is there a process to reprogram an earlier version of firmware and or are there earlier versions archived somewhere?

Do firmware reset from service menu, then set proper type, model and color values afterwards.