I got a regular PSP at version 2.71. I want to downgrade to 1.5 and then upgrade to 3.03 OE-C. I figured the easiest way to do this would be with wininstallers. So I got the 2.71 -> 1.5 downgrader full version from xtrusion found here: http://psp.xtrusion.es And the 1.5 -> 3.03 OE-C upgrader found here: http://forums.afterdawn.com/thread_view.cfm/460892 I was looking for a step to step guide for downgrading, finally found one here: http://www.psp-hacks.com/forums/about17935.html How does the upgrader work, do I need to put these downgraders/upgraders on my memory stick? Will a 128MB mem card work for this operation or should I use my newly bought 4GB mem card? Does everything look right so this should work? All advice is greatly appreciated, I don't want to mess up.