Hello tempers! I need help about this one. I have modded my slim and a couple more other friends' slims and I've done them in just a few minutes. Another one of my friends just bought a new PSP Slim (he bought it October 10, 2008). It has OFW 4.01. So I think its still very new. I started to mod it: made the MMS successfully, fully charged my Pandora Battery. But i first tested the Pandora Process in my modded PSP Slim. The service mode appeared in mine, saying press X to install CFW 3.71 m33 or something so I thought it would work on his. When we met up, i put the memory stick on his powered off PSP Slim. Then held the L button. Then inserted the fully charged Pandora batt. The power LED lit up but didn't work.... So to cut it short; is his PSP too new or does it have another kind of motherboard I've been hearing about that prevents it from being modded? Note: I did it 2 other Slims, all bought from the same store, all worked except for this one. Thank you.