I don't really know very much about hacked PSPs, my friend set mine up for me a while ago. Then I learned more about everything but it's been a while since I last used my PSP and I pretty much forgot everything. :/ Anyway, ISOs and CSOs won't play. I'm on a PSP-1000 and the firmware is 5.5 GEN-D3. When I try to open a game, it just says "The game could not be started. (80020148)". I can't seem to get anything to work. Can anyone help? Emulators work (and so does homebrew like Cave Story) but just not CSOs and ISOs. I don't remember changing anything… I just picked up my PSP after not touching it for a few months, so I could play Kingdom Hearts again. Thanks. Also, should I update to 6.something? My friend set up my PSP over a year ago and said 6.whatever just makes it annoying. Has anything changed since then? Is updating safe, should I update, and if so, how?