PSP 300(2) Prometheus ISO loader help?

[Kyoukan]

I have recently purchased a PSP 3000 (Region 2), and it was shipped with 6.20 OFW. To my dismay, I learned that it was impossible to CFW my unit. As I am new to the PSP community, I spent a few hours looking around before I found this site. It has explained a lot and helped SO much. I have now installed the Temp TN-A HEN via the Patapon 2 demo exploit, and have installed Prometheus IOS loader for 6.20. After some fiddling with some UMD games I was given by a friend in America, I ripped a copy of YS THE OATH OF FELGHANA, put the ISO into the created directory, run the exploit, apply the fix via the VSH menu and run the ISO loader. When I run the ISO, the PSP goes black, then nothing, the PSP hard resets and I have to repeat the process again etc. Do I need to patch the file, or is there another problem here?

[iamafreak]

Have u tried this little trick:

http://www.psp-hacks.com/2010/12/26/...ebrew-crashes/

[Kyoukan]

Have u tried this little trick:

http://www.psp-hacks.com/2010/12/26/...ebrew-crashes/

I have tried this, but to no avail. This was the VSH Menu fix I mentioned I believe.