PSP mods

[Nicolette]

Picked up a PSP to play crisis core today and havent yet started the game because of my techie disorder.

I've found anytime I get a new gadget: laptop, PC, phone, or video game system I must immediately customize, change, reconfigure, or disassemble it - and my PSP is continuing this trend in my need to mod it to what im learning is "custom firmware" and Pandora batteries and such. I havent actually started playing with it yet though as most of the data out there seems to indicate I should have another battery (I cant figure out if I can mod the 2gb i bought today to serviceboot and add a cfw and still use it as a memory stick or not) and havent tracked down any emus people report as fully working. Can anyone point me in the right direction?

(Mod note: this post contains no endorsements or references to roms or illegal software - please dont post that sort of thing, PM me instead =p)

 

[Lanien]

Slim or original?

 

[Nicolette]

slim I think. New, lightweight. tiny

 

[Lanien]

You do need a Pandora battery to customize firmware. You need an original PSP that has already been modded in order to make the battery. You can find them on Ebay too You will also need a Magic Memory Stick to upgrade the cfw. After that, the possibilities are endless.

 

[Nicolette]

cant i just downgrade the firmware on the PSP i bought, create the pandora battery on it, and then pop the cfw without buying something off ebay?

 

[Lanien]

Unfortunately, all Slim PSPs come with a firmware that isn't downgradeable without a Pandora battery.

 

[Nicolette]

Hmm. still looking into it, found one way to make a pandora battery rather than buy one... might end up being cheaper. - or not.

>>

Ok, so you want to unbrick or downgrade your PSP but don't have a PSP capable of running homebrew apps. No problem! In this tutorial I will show you how to modify the battery's hardware to make it activate service mode.

This is our victim . Please note that while this concept may work on non-Sony batteries, only official batteries are guaranteed to have the same internals, so we recommend using one.

STEP 1:

The first thing you need to do is obviously crack open the battery. Surprisingly, the battery isn't very hard to get in to. In this picture you can see that I'm just using a guitar pick to slide in through an edge and slide around the perimeter of the battery to seperate the two halves.

STEP 2:

Next, we need to locate a certain chip. The chip has the model number S93C56 printed on it. We are going to need to desolder pin 5 and lift it off of the board. Here is a magnified view of the board, which shows where the chip is and which pin needs to be lifted.

STEP 3:

EDIT: If you are not confident in your soldering skills, have a less than steady hand or have a larger-than-optimal sized tip, please desolder the cell pack from the battery first. If you make contact between pins 5 and 6 then you will short ground to +3.6VDC! Not good! When desoldering the cell, only keep the iron on long enough to melt the solder. If you can, use a higher wattage iron so that the tip will be hotter, but you won't transfer as much heat to the cell pack. Remember that heat + Li-Ion battery = large explosion (t3h sux0r5, unless you get in on video. Twisted Evil Seriously though, this operation is not for the faint hearted, and should definitely not be your first soldering experience. I recommend trying your hand on lifting the pins on an N64 CPU chip. Surely you have a couple killed N64 mobos laying around. Razz)

Now is actually desoldering the pin. There are a few ways you could do this, but I think my method is the best because its less likely to damage components near by. Use an Xacto knife with a sharp tip and try to put it underneath the pin. Get somebody to hold a soldering iron (WITH A VERY FINE CONICAL TIP!) on the pin. When the solder melts you can pop the pin up with the knife. Be sure not to hold the iron on the board too long to avoid the lithium battery from getting too hot and exploding. When your done it will look something like this .

STEP 4:

Finally, close the battery's casing. Use some Krazy Glue to keep it closed, or just use electrical tape around the edges like I did. I don't actually recommend the electrical tape as it makes the battery very snug in the compartment and it takes a bit of force to get it out. You can use the battery just like a regular Pandora's battery. As for getting the Memory Stick files, I can tell you that they are out there and you can find them after a bit of Googling. However, I can't tell you exactly where to find them as they contain copyrighted Sony code, and sharing them is illegal.

How does this work?

The pin that we just lifted was actually the ground pin of the EEPROM. Removing this pin effectively shuts off the EEPROM. When the microcontroller inside the battery tries to read the EEPROM, it will think the EEPROM contains all 1s (in binary). This is because of the pull-up resistors on the data lines. So the microcontroller returns a serial number of 0xFFFFFFFF to the PSP, which then goes into service mode.

Thank you for reading this, and if you have any questions, make sure to post and I'll try to help you!

<<

 

[Elemmire]

You do need a Pandora battery to customize firmware. You need an original PSP that has already been modded in order to make the battery. You can find them on Ebay too You will also need a Magic Memory Stick to upgrade the cfw. After that, the possibilities are endless.

so that means me with my old PSP = huzzah no need for Pandora? hehe

 

[Langly]

Depends what Firmware you're running.

Really the easiest thing to do is find someone near you willing to take 5 minutes of their time to downgrade your PSP. I've done it for about 4 people now. All they had to do was ask.

Short: Find someone with CFW!

 

[Lanien]

Yeah, I've done it for a bunch of people around here. Just go to your local game store, I bet someone that works there could do it for you lol

 

[Darby]

Check out Mypspworld.net

They have tons of tutorials, and the Mods on the sight know a lot of junk. and you'rs truely is a mod ^.~
They have live chat support. Its a good sight check it out. If you have any questions hit me up in game, though I'm not really up to date with the Slim PSP. Fat PSP ONRY.

 

[Elemmire]

Depends what Firmware you're running.

Really the easiest thing to do is find someone near you willing to take 5 minutes of their time to downgrade your PSP. I've done it for about 4 people now. All they had to do was ask.

Short: Find someone with CFW!

I have like.. 3.8? something like that

 

[Lanien]

Fat PSPs are downgradeable without a Pandora battery, no matter what firmware you are running. Everything I know, I got from www.qj.net or from Dark Alex.