Hi all! I need some urgent help... im thinking about purchasing a used PSP Slim 2001, and the seller tells me it has only 30 days of usage, which i dont believe. I have the PSPs serial number, so, is there any way of finding the actual manufacturer date with this serial?? I remember PS2s had a way of finding which year and trimester the console was built based on a series of letters on the back. Can i do somehting like that with PSP slim??? Also, any special recomendation concerning used PSPs??? Anything i should check so i dont get crossed over??? I have to close de deal today, so, any urgent help would be VERY appreciated!! THANKS!!