Games for Sony PSP

I bought Sony PSP some days ago, one day I was playing games on it while the batter was low and suddenly fully drop causing the shut down of PSP. Now when I charge it again and power on, the message in Games section is that there are no games to display.

My question is that how to download new games in that PSP for free?

Still waiting for reply

I have psp 3001,6.35 firmware and i downloaded games for it from torrents,search on kickass( most of sites where u can download games directly are dead like pspisoz etc.....