I have a fat PSP with 5.50 OFW and Windows Vista. Alright so I made a Pandora Battery by hard modding it, when I put it in the PSP the green light turns on. I also made a MMS with Rain MMS Maker 1.0. I clicked run as administrator and followed the procedures. Now, when I put the MMS in, hold L, the put in the Pandora's Battery all that happens is the green light turns on. Nothing else flashes, no noise at all, the screen doesn't even turn on. Can someone tell me what I am doing wrong, I have followed many guides on this site, and I just can't seem to make anything work. Also I have XP but I just don't like using that computer, if need be though I can use XP. Thank you in advanced.