Because of your info, Charles, I turned on my BD83 and was, indeed, prompted to update the firmware. Thanks. The new version, by the way, is BDP83-31-0620.
Just a quick caveat. Both the firmware and the loader are upgraded in two separate operations. When the firmware update is complete, there is a message to that affect displayed on the TV screen. I almost bailed but, fortunately, delayed long enough that the loader update started before I did anything stupid.
Don't touch any buttons or do anything until the player turns itself off. That's the signal that the entire operation is finished. I waited a minute or so to see if the player would turn itself back on. It did not, so I turned it on manually.