if the backup is an *.sdb file then the supplied song manager program (or the demo of sd explorer) is needed to restore to a blank card. If the backup is a zip file (since you can just zip up a technics and midi sd for backup) just open and drag the 'private' folder to the root of the card, no special reader needed. SD audio is another subject.

An initialisation disk for the custom section and other flash areas (home, favorites pages and user midi) was supplied, also the style converter disk. You can download them here: http://www.technics-music-service.de/downloads/index.htm