Auto boot wont work

When I set the option in the recovery menu to "auto boot program at PSP/GAME/BOOT/EBOOT.PBP"
It wont boot what I put there.
What should I do?

You use that to autoboot cintros when you turn on your psp.

???

It has a 'Disable/Enable' option right?
You know what an Cintro/Intro is right?

Yeah Cintro is the clip that shows when you turn your psp on. I'm trying to get the flash-free Cintro to work. I have game folder set to 1.50 kernel but it still wont load on start up.

Do you have the autorun enabled?

Yes

There is a cintro mod for 3.90 that uses the 3.XX kernel. Are you using that one or the 1.50 one? Try this one