Weird question, but I gotta know.

I'm looking up this whole MUGEN on PSP thing, Infcat or something.

I've looked up a few videos n such, all saying I need 1.50 firmware.

I'm running 6.39 Pro-B6 on my 3000.

So if I absolutely need to have 1.50, is there a way to run 1.50 made homebrews on my firmware?

Or is it already supported in some way and I just don't know it?