Yamaha psr s 700 to psr s 770 conversion

[Jaisonxv]

Hello all
Currently Iam with a Yamaha psr s700 which has no support for Indian tones. Recently Yamaha has recently released downloadable tones for psr s770 and many other models. Since the hardware of 700 and 770 is almost the same, is it possible to swap motherboard with 770

 

[SeaGtGruff]

I seriously doubt it. If you want a PSR-S770 motherboard, I'm afraid you'll need to get rid of your PSR-S700 and get a PSR-S770. The newest model is the PSR-S775, so you might be able to get a used PSR-S770 at a good price.