Some assistance required for downgrading.

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Synthoid
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Some assistance required for downgrading.

Post by Synthoid »

I'm not sure if this kind of talk is permitted on the forums, but I've been hoping to downgrade my PSP in order to get PicoDrive working. Not only that, but also some kind of PSX emulator or something to that degree. I know very little about the homebrew "scene", so I would like some simple instructions if that's okay. Okay, first of all let me run down the current specifications of my PSP:

It's a non-slim white PSP, with the current firmware at 3.71. I'd like to know if there's any chance of downgrading to something that'll allow me to use either PicoDrive or a PSX emulator. I've heard of Pandora's Battery, but apparently that involves another PSP, which I don't have access to at the moment.

Any suggestions would be greatly appreciated.
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87th
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Kojima games owned: METALGEAR SERIES
MetalGear (MSX2) [European]
MetalGear (NES) [European]
MetalGear (Famicom) [Japanese]
MetalGear 2: Solid Snake (MSX2) [Japanese]
Snake's Revenge (NES) [European]
MetalGear Solid (PlayStation) [European]
MetalGear Solid: Premium Pack (PlayStation) [European]
MetalGear Solid: Integral (PlayStation) [Japanese]
MetalGear: Ghost Babel (Gameboy Color) [European]
MetalGear: Ghost Babel (Gameboy Color) [European]
MetalGear Solid 2: Sons Of Liberty (PlayStation 2) [European]
MetalGear Solid 2: Substance (PlayStation 2) [Japanese]
MetalGear Solid 2: Substance + The Document of MGS2 (PlayStation 2) [European]
MetalGear Solid 2: Substance (Xbox) [European]
MetalGear Solid 2: Substance (PC) [European]
MetalGear AC!D (PSP) [European]
MetalGear Solid 3: Snake Eater (PlayStation 2) [European]
MetalGear Solid 3: Snake Eater - Premium Pack (PlayStation 2) [Japanese]
MetalGear AC!D2 (PSP) [European]
MetalGear Solid 3: Subsistence - 1st Edition (PlayStation 2) [Japanese]
MetalGear Solid 3: Subsistence - Promo copy (PlayStation 2) [European]
MetalGear Solid 3: Subsistence - 1st Edition (PlayStation 2) [European]
MetalGear Solid: Digital Graphic Novel (PSP) [European]
MetalGear Solid: Portable Ops (PSP) [American]
MetalGear Solid 4: Guns of the Patriots - Limited Edition (+ Bonus Disc, Soundtrack and 6" Old Snake Action Figure) [European]

SNATCHER SERIES
Snatcher (Mega CD) [European]
Snatcher (Saturn) [Japanese]

POLICENAUTS SERIES
Policenauts Pilot Disk (3DO) [Japanese]
Policenauts (3DO) [Japanese]
Policenauts (PlayStation) [Japanese]
Policenauts (Saturn) [Japanese]
Policenauts (Saturn) [Japanese]

ZONE OF THE ENDERS SERIES
Zone Of the Enders (PlayStation 2) [European]
Zone Of the Enders: The Second Runner - Special Edition (PlayStation 2) [European]

BOKTAI SERIES
boktai: The Sun Is In Your Hand! (Gameboy Advance) [European]
boktai 2: Solar Boy Django (Gameboy Advance) [European]

OTHER SERIES
Penguin Adventure (MSX) [European]
Kabushiki Baibai Trainer Kabutore (DS) [Japanese]

KOJIMA-RELATED GAMES
Konami Krazy Racers (Gameboy Advance) [European]
Super Smash Bros. Brawl (Wii) [American]
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Post by 87th »

Pandora's Battery doesn't require a second PSP. Only a second Memory Stick and Battery are required. I think it's even possible to downgrade with Pandora's Battery, even if you only have a single battery/memory stick, but it's a little more complicated. You should search for "Pandora's Battery" on YouTube and try following one of the many tutorial videos.
If you can downgrade to 1.50, it should be easy from there on in. I recently downgraded my 3.52 M33 to 1.50 then upgraded a couple times from that. I'm now running 3.80 M33-4. If you have any speciffic problems with the process, feel free to ask.
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Synthoid
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Post by Synthoid »

What are all these "M33" suffixes that I keep hearing about? I don't have that, I've just got 3.71. No "M33", "M34" or what-have-you.
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87th
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Favorite Game: MetalGear 2: Solid Snake
Kojima games owned: METALGEAR SERIES
MetalGear (MSX2) [European]
MetalGear (NES) [European]
MetalGear (Famicom) [Japanese]
MetalGear 2: Solid Snake (MSX2) [Japanese]
Snake's Revenge (NES) [European]
MetalGear Solid (PlayStation) [European]
MetalGear Solid: Premium Pack (PlayStation) [European]
MetalGear Solid: Integral (PlayStation) [Japanese]
MetalGear: Ghost Babel (Gameboy Color) [European]
MetalGear: Ghost Babel (Gameboy Color) [European]
MetalGear Solid 2: Sons Of Liberty (PlayStation 2) [European]
MetalGear Solid 2: Substance (PlayStation 2) [Japanese]
MetalGear Solid 2: Substance + The Document of MGS2 (PlayStation 2) [European]
MetalGear Solid 2: Substance (Xbox) [European]
MetalGear Solid 2: Substance (PC) [European]
MetalGear AC!D (PSP) [European]
MetalGear Solid 3: Snake Eater (PlayStation 2) [European]
MetalGear Solid 3: Snake Eater - Premium Pack (PlayStation 2) [Japanese]
MetalGear AC!D2 (PSP) [European]
MetalGear Solid 3: Subsistence - 1st Edition (PlayStation 2) [Japanese]
MetalGear Solid 3: Subsistence - Promo copy (PlayStation 2) [European]
MetalGear Solid 3: Subsistence - 1st Edition (PlayStation 2) [European]
MetalGear Solid: Digital Graphic Novel (PSP) [European]
MetalGear Solid: Portable Ops (PSP) [American]
MetalGear Solid 4: Guns of the Patriots - Limited Edition (+ Bonus Disc, Soundtrack and 6" Old Snake Action Figure) [European]

SNATCHER SERIES
Snatcher (Mega CD) [European]
Snatcher (Saturn) [Japanese]

POLICENAUTS SERIES
Policenauts Pilot Disk (3DO) [Japanese]
Policenauts (3DO) [Japanese]
Policenauts (PlayStation) [Japanese]
Policenauts (Saturn) [Japanese]
Policenauts (Saturn) [Japanese]

ZONE OF THE ENDERS SERIES
Zone Of the Enders (PlayStation 2) [European]
Zone Of the Enders: The Second Runner - Special Edition (PlayStation 2) [European]

BOKTAI SERIES
boktai: The Sun Is In Your Hand! (Gameboy Advance) [European]
boktai 2: Solar Boy Django (Gameboy Advance) [European]

OTHER SERIES
Penguin Adventure (MSX) [European]
Kabushiki Baibai Trainer Kabutore (DS) [Japanese]

KOJIMA-RELATED GAMES
Konami Krazy Racers (Gameboy Advance) [European]
Super Smash Bros. Brawl (Wii) [American]
PSN: eighty7th
Wii Friend Code: 4890580757769739
Location: Zanzibarland
Contact:

Post by 87th »

M33 is one of the custom firmware teams. They add the suffix to each of their releases.
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Synthoid
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Post by Synthoid »

Ah, alright. I'll figure something out with this, thank you for the tips!
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Post by mrgone »

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