You will need the 2.0 updates, the mph downgrader, and then you should read the "Ultimate Emulator FAQs v1.3", its a sticky in the software section. You can get the 2.0 Update and the mph downgrader on
www.psp-hacks.com or
www.pspupdates.com Use google to search for mph downgrader instructions if you need more help then what those sites povide. Good luck and read up, theres tons of good info here.