Hello: I own both DG100 grand for use in my living room and the sd1 for gigs...I'm A very big fan of the product. I've gone through all of yamaha, korg and Roland and finally settled on Ketron. I invested in the grand to practice at home and transfer all my data on the sd1 for outside gigs. Knowing that the brain of the DG and Sd1 are basically the same, I have not found the software upgrades for the DG as I have for the SD1, Can I use the Sd1 OS upgrades to load in my DG?