Dualflash PSP – Concept Photos & Technical Details

McZonk from Team Emergency Exit has updated his project status.

I made three pictures that should show where the flash is in the psp and how the dual flash will fit in. These are just concept images. The board is not build already.

 
 
 

 

Technical Details

A lot of people ask about some more details about the dualflash concept. Here are some. Please remeber that all this is just a theory, but I’m convinced that it will work.

The basic plan was an unbrickable psp for support the developers who like to play around with firmware, exspecially Placa from Team Emergency Exit. There are a lot of concepts you can find in the net out there. My idea is a little circuit board with two flash chips mounted on and the possiblitly to switch between the chips. If one firmware is damaged you will be able restore it with the other one. Here is the point where a lot of people ask: How to do that? The answer is simple. Use the second flash to start an update to 1.5 and just before the update starts switch between the flashes. It should also work if the seconds flash has firmware 2.01 or higher or even if the second flash is empty. The switch will only made for the nand-flash, not the ram. This is possible because both compontents have their own power supply.

Some other facts. No it won’t be a universal downgrader. To create a dualflash psp is a very high risk. It’s not made for consumers. I don’t plan to start a service for building dualflash psps or reflash bricked. What price I should take for this mod? It must be much more expensive than a normal psp, because the risk to destroy the board is so high. Perhaps some other one will take this risk. I will distribute the circuit board or the plans for it, if some others want try to build their own dualflash psp. But this will only happens if I got my first successful modded psp.

The prototype will be in an uncovered psp. But the circuit board will be small enough to build in a psp. This is important because the ram timing is so critical and as shorter as the wires will be so smaller the problems are. I good thing is that the bus frequency is only 111 MHz normal. But perhaps it won’t be possible to clock the psp back to 166 MHz bus freq.

McZonk from Team Emergency Exit has updated his project status.

I made three pictures that should show where the flash is in the psp and how the dual flash will fit in. These are just concept images. The board is not build already.

 
 
 

 

Technical Details

A lot of people ask about some more details about the dualflash concept. Here are some. Please remeber that all this is just a theory, but I’m convinced that it will work.

The basic plan was an unbrickable psp for support the developers who like to play around with firmware, exspecially Placa from Team Emergency Exit. There are a lot of concepts you can find in the net out there. My idea is a little circuit board with two flash chips mounted on and the possiblitly to switch between the chips. If one firmware is damaged you will be able restore it with the other one. Here is the point where a lot of people ask: How to do that? The answer is simple. Use the second flash to start an update to 1.5 and just before the update starts switch between the flashes. It should also work if the seconds flash has firmware 2.01 or higher or even if the second flash is empty. The switch will only made for the nand-flash, not the ram. This is possible because both compontents have their own power supply.

Some other facts. No it won’t be a universal downgrader. To create a dualflash psp is a very high risk. It’s not made for consumers. I don’t plan to start a service for building dualflash psps or reflash bricked. What price I should take for this mod? It must be much more expensive than a normal psp, because the risk to destroy the board is so high. Perhaps some other one will take this risk. I will distribute the circuit board or the plans for it, if some others want try to build their own dualflash psp. But this will only happens if I got my first successful modded psp.

The prototype will be in an uncovered psp. But the circuit board will be small enough to build in a psp. This is important because the ram timing is so critical and as shorter as the wires will be so smaller the problems are. I good thing is that the bus frequency is only 111 MHz normal. But perhaps it won’t be possible to clock the psp back to 166 MHz bus freq.