the pandora is incase of a brick to enable recovery,when the keys were cracked for the psp it made signing of basically anything you want to be allowed run on the psp,with limitations only to your particular model,my sons is on 620 pro b permanent,im still on 5.33 cfw,there is some models that cant be permanent but the fast recovery is just a extra step,there is no need for the mms marker with the new cfw