1. You need to download naviSW (from sticked topic for example), empty CD, soft for burning images to CD (MagicISO, UntraISO, ImgBurn etc)
2. Press MENU, then select SET (or SETTINGS), in the upper right corner you'll see something like SW4-1/91..... Latest SW4-1/00 (it's v 31)
3. Dealer - officially, torrents - non-officialy