How to Hack a PlayStation Portable
This is a guide on how to alter a PSP by downgrading its software. This only works on PSPS software versions 2.0 and earlier. However Above firmwares can use pandoras battery to unbrick, downgrade and install custom firmware.
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[edit] StepsUnzip 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 instrumental in 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.
Backtrack to the PSP directory and then this time enter into the Game directory. If there is not alreadconnection 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 and start it up. Go t prompts. WhenPANIC. 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.
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.
[edit] TipsAlways double check your work
Make sure you run a virus scan on all software
[edit] Warning! It is possible to permanently damage the internal components of the PSP, so please use with caution.
Many downgraders are actually viruses in disguise, which delete several important system files to break your system. Download downgraders from reputable websites
Downgrading your system voids your warranty, so do this at your own risk.
[edit] Things You'll NeedHardware
A Playstation Portable Console©
A Computer
USB Cable (To connect PSP to Computer System)
Software
MPH Downgrader
1.50 Update EBOOT
4.1 Update EBOOTyitu76i
