There is a cheat displayed stating that you can keep the infernox armor forever if you simply open the infernox mode box, pause the game, open the skins screen, and select "current armor" I have tried this cheat, and it does however work, but the "fake" armor is only the equivalent to your armor that is displayed on your items screen, which is the last armor that you have purchased, or your "real" armor. The game designers have put this cheat on the game, simply to trick the players who think that they can get the infernox armor for free.