Elizabeth, the KN1000 won't play on your KN7K and I couldn't get it to play on my KN6K, either. Any style NOT carried over to a new keyboard is included in the download of styles at the Technics website, as already stated, and WILL NOT have to be upgraded, as that chore has already been done for us. I spent many hours at my dealer cross-loading styles from one keyboard to another just to gather the styles from the older keyboards and PR's before Technics did the job for us. Had I known they would do that, I could have saved myself a ton of work, so you can see why I ask you why you want to go backwards. Not to mention, that most of the styles won't load up in the newer keyboards without help. Also, you didn't mention the KN1400, 1500, 1600, plus a few others in between.