I use a program called PSP Grader Lite v006, it's the only MMS program that worked for me since i'm using windows vista. With PSP grader v006, you can install 4.01 M33 on your PSP, there are some tuts out there that make you change that to where you can install 5.00 M33 instead.

Or you can just download the PSP Grader v008 where it installs 5.00 M33 CFW on the PSP.. That one never worked for me either, not sure if it's because i'm using vista like i said.

But yeah, just google them and there's tons of sites where you can download them.

Goodluck.. :taz: