5.00 M33 - Help!

[Kamut]

I just upgraded my firmware, and my psone EBOOTS
are not loading (the psp switches itself off)
and my snes emulators and stuff isn't working properly.

I was on 3.90 M33 before I think.
Everything was just peachy...

Do I have to move EBOOTS and emulation stuff to a new folder with 5.00 M33?

If not I would just like to go back to 3.90 M33 or whatever I was on, how do I do that?

Peace.

[Kamut]

O.K FFIX and the rest are working it was just Colin Mcrae rally not working!