When I bought a PSP in January, it came with Firmware 5.53, or something, and I was able to load Ape Escape: On The Loose from ISO. I had to get my PSP replaced (for free) because of a dead or stuck pixel, and my new one came with Firmware 6.20. I recently installed TN-D, and I haven't played Ape Escape since I had my old PSP. So, I tried loading it from ISO, and it would crash while loading the game (using Prometheus ISO loader). I have no idea what's causing this, but I think I may need a patch or something. Has any one else had this problem? Most my UMDs, including Ape Escape are 200 Km away right now, so I can't check if my disc is working... Edit: I just bought another copy (only $11.19) and it seems to be working fine, though I've noticed slow-down if I don't increase the clock speed above the default value. The added noise and longer loading times are quite annoying.