Hey, As the title suggests, I don't know what I just did to my PSP. My friend told me to upgrade it (since she said that it was outdated and something) so I went to Google and asked for the link where I can download the 6.60 upgrade. I followed the procedure but this message about the '9.90 system' and that 'there is no need to update' popped up whenever I tried to open the application for upgrading it to 6.60. Then there was this tutorial that I should open the XMB menu then switch the USB to 'flash 0' (can't really remember the name), then change the text version from X.XX to 5.50. It really helped me and all with upgrading my device but what I don't understand is why did my games and files disappear? Did I do some damage to the main software? Thanks.