Use UP & DOWN, LEFT & RIGHT to select a save to dump. All dumps will be saved to save by pressing A or save/{titleID}/{userID}/ by pressing Y (will overwrite whatever's already in there.) Press ZR to dump all saves. Pressing X will inject all data that's present in inject (sometimes doesn't work due to service being broken on 5.0 and without using it, fsdevCommitDevice() can fail... Use at your own risk and always have backups)
This wasn't something that I wanted to release, but since many people didn't want to wait for Checkpoint, I had to make it a bit more usable so it doesn't get too messy too quickly.
I don't intend on spending any more time on this tool since you should probably just use Checkpoint or JKSV. If you want to make any improvements, you're welcome to create a pull request.