Attn: In order to play back ups on your PS2 you will need a Free Mcboot memory card or your PS2 must be hard modded. Also the Free Mcboot soft mod does not work with the PS2 slim models. You can purchase these memory cards for around 10 to 15 dollars on ebay. Please make sure that the cards have the ESR patcher software and that it is the latest firmware. If you have any questions please feel free to contact me. Thank You.