I just updated to 3.71, so i put a different theme on, on for 3.52 (i forgot which version it was for) then a ran my psp, obviously, it didn't work. I looked around and found original flash 0 files for 3.71, so i put them back on. My psp still doesn;t work, although i can access the recovery menu. Please, some one help this asian.

I've reflashed the flash 0 twice with no effect, and form the recovery menu i can only flash flash 1, which I've already done

If your on 3.71M33 and not 3.71M33-2 you won't be able to just reflash your original 3.71M33 files from the recovery because of the flash bug.

Your going to need a pandora battery.

I'm on 3.71 M33-2 with a phat/fat psp

I'd say as the files he used to try and revert back to 3.71M33 were not his that the simplest and most reliable way is if he has a pandora battery, though the 1.50 addon method might work (not really sure as I have no interest in 1.50).

so pretty much i should try and install the 1.5 kernal addon, right? I'm not going to until i get a definite yes or no.

Yes.