Hi everybody, I get a psp slim 2004 ta-085 and I encounter some problems, I need your help. When I turn on the psp, the xmb don't appear, I can only see the waves. The only ways to display the xmb are that : -Run the recovery and lauch run program at /PSP/GAME/RECOVERY/EBOOT.PBP -Remove battery and memory stick and wait a few seconds But even when the xmb appears, i can't launch umd, and homebrews work half the time. I've try to reinstall many times the firmawre , format lflash, repair idstorage, but nothing works. A technician said that i need to copy idstorage keys from a healthy psp ta-85 and put them on my psp. So i'm searching someone who can help me and has a psp slim with a ta-085 motheboard. Thank you.