I have checked the firmware and the one installed on my dvd player is 1.2 and the version in Update Information section is 1.1. So I assume I have the updated version?
I recorded a tv programme from terrestrial TV to a blank disc (dvd-RW) on my DVD recorder. I have done this for ages now and have never had this problem.
I did the above and recorded a programme from TV. I managed to play it back. All well I thought. I switched off unit from switch on DVD and switched on again to check. Again the message displayed "unsupported" and U81 on the display.