Pandora Battery Help

When I'm finished following the steps, and place the battery and memory stick into my bricked psp. Nothing happens, only a black screen. Wtf?

Neh, its a FAT. Sadly, nothing is going on. I followed all instructions, the pandora battery automatically starts up. But not the memory stick.

Oh well, guess I have to buy a used one. Neh.

has anyone tried reversing the pandora? people say that it isnt advisable to convert it again and again to pandora and normal batt.. sadly i did coz i didnt know that it can screw up the batt.. but has anyone tried converting it to a normal batt ?? my battery wont charge itself anymore. it always shows 0% charging and says its Fully charged. =/