Here's what happened:
I was upgrading my firmware to 5.02 GEN, and while it was in the process of upgrading(the loading part on the psp), i got bored, so i decided to read the txt file that came with it. I was shocked at the part that said it would no longer support ISOs and POPs, so i decided to stop it. I did the dumbest thing in the world, and pulled the batteries out in a futile attempt to stop it. When i turned my psp back on.... well... nothing happened, it only shows the green light, signifying that it's on. But the Mem. Stick's LED wasn't flashing, so it probably didn't brick, i already tried to access the menu thing when i turn it on and press "R".
So can n e 1 help me? please?