Default means back to how the game is when you bought it with no option file. As in the default kits with no edits at all. Load the game with no mem card to see what default is. Basically you need to go to each kit and change them from the edited version back to what they looked like originally. If you do this on a patched version, you should then see the patched version. Every team has 4 kits that need fixing, 1st kit, 2nd kit and 2 for the keepers. Every single team needs all 4 kits to be set to default.