Unless I'm missing something , or misunderstand you , you can't just save downloaded patches to a disk from you're PC . The V-50 can't read it , it's not in a format that the V-50 can understand . You must have a patch editor ( editing software for the PC and V-50 ) , load the patches into the V-50 and then save them to disk on the V-50 . The V-50 will format the disk in it's own proprietary information that only it can read . The patches must be in the editing software and sent via midi to the V-50 ( it's not sending actual sounds but controller info to the voice architecture to set them to the sounds ) . Then save them on the V-50 .