Disklavier

HELP! I have a old disklavier (I think its a 100mx) and over the 
years I have bought a DSR1 box as well as the seperate cd player. I 
was on the  Yamaha website and seen that I could upgrade my DSR1 box 
(so I could buy disc and also records to play) I did all what was 
said in the instructions I think my system was 2.2? and I could 
upgrade it to 4.44 I have downloaded the upgrade and printed out the 
instructions. its loads the disc but now I cannot play any disc at 
all! I'm a very stressed out person at the mo..........I play the 
piano every day so I'm piano less!! PLEASE PLEASE can anyone help me? 
on the downloading the instructions does all but the last instruction,

screen then displays DSP? press YES to upgrade DSP board.
after about three minutes LCD displays COMPLETE turn off control unit 
update is complete.

what happend when I load is it does not ask me to press yes to 
upgrade dsp board. and the screen is blank!It tell me to switch off 
and switch on again whic I do and I cant play any disc at all!

Hope that you can help!

Many thanks
stephen Bennett