A friend of mine gave me a psp he said his kid was doing something to it (prolly not hacking hes is 6 year old) and it broke. Not knowing a thing about psp i opened it up and removed the screen and put everything back together in case something got unseated. I put it back together and the screen is still black so I assume it was a failed upgrade or something the unit it's self is in good condition. The battery charges and the if i click the power button up it stays on for a while and then goes off because the screen doesn't turn on. Anyway I was reading a lot about what I need to do to revive it and I believe I have all the files necessary files, I just need to go to the store and buy a slim battery to abuse and a memory stick. But before i spend the money and destroy a battery I just wanted to clarify a few things. I don't know what the firmware version was and neither does the previous owner. After searching I guess it might be safe to say the 2001 slims come with 3.80 firmware? is this correct? And if it is correct do I need to flash over it with the same version? Another thing some guides never made it clear to me if recovery mode is possible without a hacked Firmware and battery. I tried holding R and powering on and different combos but the screen is still black... Will it go to recovery mode with the pandora battery? Also some guides say go into usb mode to format your memory stick and do whatever commands that need to be sent to the device but mine wont display anything. Is the usb mode option in the recovery menu ? as a said before I believe its full brick. Is is it recoverable?