没有5.50M33先升5.00M33-6 教程: http://psp.tgbus.com/pspdg/jc/updown/200901/20090121094146.shtml再升5.50gen-D,最后升5.50gen-D2 教程: http://psp.tgbus.com/pspdg/jc/updown/200910/20091026181541.shtml望采纳