Here is the story:
I have a white psp which was 1.5. I upgraded to 3.40 oe and it was working well. Then I accidentally deleted some stuff at the resource folder. Because of that some parts of XMB stopped working. So I decided to revert to 1.5. I followed the instructions, wherein I got the recovery package and the 1.5 eboot from qj.net. It was a successful flash. However, after the sce logo appeared, there was a page that stated that apparently my psp's config was corrupt and I had to press O to fix it. Then the backlight died. Somehow I was able to install 3.40 oe and everything is fine. Except the recovery mode suffers from the lack of backlight.
Short story: Recovery mode does not have backlight, while other modes have.
So is there any solution to this? I'm kind of scared of bricking my psp. It's the first time this has happened to me.
Edit: Nevermind... found my problem... thanks for viewing...