Hi Thanks.
No not tried that yet.
I have Expansion Boards (SY-EW01NX & SY-EW02NX)in the keyboard. I have it in the back of my mind that they have to be removed before a reset, but don't know where I read that. Do you know if that's the case?

And if so, whether it's simply a matter of unscrewing the base and pulling out?

Also, a bit confused that the expansion packs say the 6500kn has to be Version 7. I'm sure I would have checked/loaded the correct version when I loaded the expansion cards, but on powering on (with Digital Drawbar/Accordion/Sound Explorer buttons pressed) it says "ver 1.3"