Oh, btw Don. If you do an upgrade of the OS I recommend you use the Floppy Disk method. The USB way can be tricky especially with an earlier version OS. I upgraded my Tyros using Floppy Disks and it went smooth as silk. Make sure you follow the directions to the tee and you should have no problem. Print the instructions out and what I did was use a small empty 10 pack floppy disk container (cardboard type) and put all the Disks of Data from the OS upgrade into it and put it right on the floppy disk holder above the Floppy Disk Drive of the Tyros. That way they're all in order, in sequence and ready at hand.

Best regards,
Mike