You encounter the following symptoms: 1. During recording, an “Update” message is shown on the LED display which does not allow you to record on the disc media. 2. When trying to playback “Unknown” / “Blank” disc error message appears on the display. For your information, the software upgrade solution is now available. Kindly follow the instructions below. * For DVDR3380, please click here to download software upgrade * For DVDR3440H, please click here to download software upgrade * For DVDR3450H, please click here to download software upgrade * For DVDR3460H, please click here to download software upgrade