what do you mean by semi-brick. (normally reffered to as i can't enter the systemmenu settings..)
you mean when you want to go from a game back to systemmenu by pressing home?
and that freezes / gives you a black screen?
did you install priiloader along with your softmodding, you used mauifrogs guide.
have you adjusted something there in the settings of priiloader, like return to: and there changed from systemmenu to something else?