Help with PSX games

[Rookie]

I upgraded from 1.5 to 3.02OE-B ok? that will run psx games on my psp right?. i download a torrent of crash bandicoot 3 and it came up i clicked on it from my memory stick and i got it working images and everything then a black screen... no why of doing anything. Please help

[unpure]

Some POPS (the PSX emulator) can't run certain games.
Try either installing a higher firmware (every mainstream custom firmware is available on http://dax.lan.st/)
or installing POPSloader (this is a plugin that lets you run a higher version of POPS with a lower version of firmware).
And if you need help, just ask!

[sparxx57]

3.52 M33-4 seems to be the best for most games,dont forget to enable it in recovery menu.

[no-hope]

How do i get plugins to work>