I can load the sounds onto the external Flash memory card so that they are available once you turn the unit on... that way, you can maintain your current AUTOLOADING/SOUND configuration. However, I will still need the HD circuit and HD for the EPROM modification and also to install the files that need to be loaded in order for your X1 to access/use the EXP voices. The new styles will also be included within the HD and can be loaded into Pattern. REM:- You will need to have the EXP sound card loaded in order to use the EXP styles, else thwy will sound 'incomplete'.
Let me know if you're comfortable with this option for your keyboard.