Hack a Playstation Portable

This is a guide on how to alter a PSP by downgrading its software.
ONLY WORKS ON PSP SOFTWARE VERSIONS 2.0 AND BELOW

1. Unzip the files MPHDowngrader.zip and EBOOT_1.50.zip. Use a program such as WinRAR, or WinZip. These files are the ones that shall be detrimental in hacking this hardware.

2. Take the USB Cable and connect it to the Playstation portable as well as the computer. Once the connection is set up, select the Start button, and the click My Computer. The connected PSP should be shown as a new removable disk, this is where you will need to browse into. When you first click to open up the PSP on your computer, you'll be in what's called the root menu.

3. Copy over to your PSP the following files to this location in the root folder, they are extracted from the previously unzipped MPH Downgrader folder, Index.dat and h.bin which should both be moved into your root directory. Once this is done, open up the PSP folder and then enter into the Photo folder. Here, you will copy overflow.tif over, also removed from the MPH Downgrader folder, keeping it in the Photo directory and not in a sub directory.

4. Backtrack to the PSP directory and then this time enter into the Game directory. If there is not already, create a folder called UPDATE. Open up the new UPDATE folder, then copy EBOOT.PBP into this folder from your computer. Disconnect the USB connection from the computer and plug the power adapter into the PSP.

5. Deselect the USB connection and then go to the Photo icon on your PSP and scroll through the pictures to get to the overflow.tif file. Two strings of letters/numbers will appear as if something has gone wrong but this is perfectly normal.

6. Move over to the Game icon within upon the PSP and scroll down to memory stick. Select it and you should see the 1.5 update. Select it and start it up. Go through it and follow the prompts. When the update reaches 99% it will crash and show an error but THIS IS OKAY…DO NOT PANIC. Once again press the power switch up until it fully turns off. Now, turn the PSP back on. You will get another error. Just press the "O" button and it will restart after rebuilding the system data.

7. Figure out what to add with your brand new open-ended BIOS. If you search the web you will find a plethora of different options
* NesterJ (NES Emulator) v1.11 (402KB)
* v1.11 Ruka's Nintendo Entertainment System (NES) emulator for the PSP.
* Monkey64 v1.0 (232KB)
* v1.0 The first N64 emulator for the Sony PSP. Written by PSmonkey.
* Homer's RIN v3.2 (623KB)
* v3.2 Gameboy/Gameboy Color Emulator for the PSP.
* NeoCD PSP (611KB)
* v0.9.1 NeoGeo CD Emulator for your PSP. Released by ZeLurker, camiyu1, and Radius. Based on the emulator written/ported by YoyoFR
* SNES9X TYL (1.04MB)`v0.2c An improved version of the SNES9x emulator by yoyofr
* DGEN SEGA Genesis / Mega Drive (425KB - 19,744 downloads)
* v0.70 A new SEGA Genesis (Mega Drive) emulator for your PSP. Written by Syn-z.