Hi, I just bought a original psjailbreak last night for my 60GB US Fat PS3. I backup 3 games: Ninja Gaiden, Dante's Inferno, Uncharted 2 Among Thieves to my usb ext harddisk. But I can only play Ninja Gaiden. When I try to play Dante's Inferno and Uncharted 2 Among Thieves. It's show a error asking me to insert game disc to play. Did I miss any step? Or do I need to uninstall anything from my PS3? Really deeply appreciate any helps. Thanks in advance.