Disklavier

I have a C7 with this Disklavier, the floppy disk is the original 360K single density version and is now unable to read floppies.  

I contacted my Yamaha dealer, who said that I was out of luck--but I've searched the archives on this site, where it appears that I should have the ability to replace this box with a newer box that has USB capability.  Is this correct?  I told my piano tech, who is going to a Yamaha event shortly and he plans to try to get the straight scoop here. 

Note I am not really interested in another add-on box that works through MIDI--MIDI has never worked cleanly on my piano, and the solenoid letoff is too clipped, leading to rather poor reproduction of playing.  My understanding is that this is a design issue fixed in later versions of the Disklavier, rather than being an adjustment issue (my tech has done several adjustment sequences to try to fix this without success).

Am I understanding this correctly?

Thank you, Robert Morrison