If the 4gb pro duo works EXACTLY like a 1gb pro duo? What I am trying to understand... does certain programs/hombrew not work w/ the 4 gig cards. My main concern is with the devhook loader, do all versions of devhook work on the 4 gig pro duo. If something does not work on this card, why not? and what program is it that doesn't work? By the way, when are the 8gb pro duo cards, because I know when this comes out, the 4 gb cards price will drop drastically.