I have received PSP slim with CFW 3.71 M33-2 as a gift and I love it. I have noticed that some of my games don't run. I ripped a game that I bought from a UMD onto a card and I've noticed that the it loads and plays faster than the UMD, thus why I love this aspect of the PSP. For some reason, some of the games that run great on my friends older PHat PSP (same CFW) won't run at all on my slim Psp. I've tried all the recommendations on this forum that I could find, but for some reason the game will play for a bit and then freeze or not work at all. My question is this, what is the best CFW to use to get MOST of the games to work. I figured that I would just update my firmware to the newest one (the largest number????) and I hope that this would take care of my problem. I do realize that not ALL games work on all CFW, but I was hoping that a majority of people on this site can say which is the most stable CFW to use. Thanks for any advice.