Disklavier

I just ran through the steps in upgrade manual and everything seemed to go perfectly.  Now when I try to update the PRC-100, I get an error message after pressing on Interface Updater.

It says the unit cannot connect to the I/O Center.

Has anyone else had this issue.  I've tried resetting the PRC and the Piano.  It is connected to the DKV wireless and I can run the piano through the calibration steps. 

Is there a way to update the PRC without the I/O center?  I was wondering if there is a way to do this with th SD card.

Thanks for any help you can provide.