Downgrading

[ProgNeg]

Hello,


I'm an ex-psphomebrew user. I used the gta lcs hack back in the day, maybe 2 years ago. Then, I accidentally updated my psp. Then I sold it.

Now, I bought a new one, because being on the road is no fun with a laptop that dies after an hour of any sort of cpu stress at all (even pscs3 runs it's battery like madness!)

Anyway, I was wondering if it was at all possible to downgrade the 3.90. I want it to be like the good ole' days, playing mario 64 @ ~5 fps! lol...



Good Day!

[-Xandu-]

Yeah you can use the Pandora Battery downgrader but you need another homebrew enabled PSP.

http://www.dcemu.co.uk/vbulletin/sho...hlight=Pandora

And Mario 64 now runs at 90%
http://youtube.com/watch?v=2a_gLSQQlOM&feature=related.

[ProgNeg]

So this Pandora Battery is just a file, not an actual battery?

[-Xandu-]

Yep, it modifies your battery to work as the Jigkick battery Sony uses to unbrick their PSP's.

[ProgNeg]

No idea what that means!

Well that name is certainly misleading! Now I have to hunt down one of my friends who has homebrew or this hack or something.

Is that file on the link you sent me the latest version?


Thanks for the help.

[ProgNeg]

Now I'm a little confused. Why do I need another PSP when the tutorial mentions nothing of needing one?


Thanks.

[-Xandu-]

But as with all of these, nothing is garunteed, adn YOU MUST HAVE ACCESS TO A NONBRICKED PSP

That's what the quote says. And what they mean by a "NONBRICKED PSP" is a homebrew enabled one..

[ProgNeg]

Oh lol. From what I remember bricked means useless. Like just the light works.

[MicroNut]

Pandora's Battery is regular PSP battery that has had its serial number changed to all 1's.
When the PSP boots it checks the serial number of the battery.
If it detects a battery with all 1's it goes into service mode and attempts to boot some files from a specially formated memory stick.
You can still use the memory stick as normal after its been formated.
The Battery can technically still be used as normal if you further modify the memory stick,
other wise it will need to have its serial number restored if you want to use it as normal again.

Making the memory stick is easy with an application like this:
Pandora CMD 150 371 380
There are basically 3 versions of the memory stick.
Each one has the ability to directly flash the PSP to either 150, 371 or 380.

However, the Battery is a little harder to get.
1. It must be created on a modified PSP that can run the application that changes the serial number
2. or it can be hard modded by snipping a few pins on the batteries eeprom that disables the serial number.
Suffice to say the later is much harder to reverse.
3. You can also buy a battery from Datel that is specially made only for this purpose
Datel Battery Tool

The original Pandora battery files along with the battery conversion application is here:
Pandora's Battery

What makes Pandora so special?
1. It has the ability to un-brick almost any PSP.
2. Flash any PHAT PSP to 1.5, 3.71M33 or 3.80M33
Remember that SLIM PSP's can only be flashed with 3.71M33 or 3.80M33
3. Make full "NAND" dumps of your PSP
This makes it possible to quickly return to any PSP firmware version you have made a dump / backup of.
A NAND refers to the chip that contains firmware or operating system of your PSP.

So it really makes sense to get one.
Use it, cherish it.

A few links to get you started:
Dark-AleX - PSP Developer
PlayStation Portable homebrew
PSP Firmware

[ProgNeg]

Thanks Micronut. So this is what I will have to do


Put files on my memory stick

run that program that makes my battery's serial change

???



Could someone add me to aim
violence0n@aim

I'm completely lost!