My cheats only works on the most latest version v1.01
Items will unlock, if you don't have.
100LV will be appeared when a battle is finished. (i.e. the moment of LV up)
For the Max HP cheat, it will always appear on the first character, if you change the actor by pressing UP, all other character and emery will have a HP of 45/45 Heart. (Max 140 actors) I recommend you use this cheat together with #3 & #4.