flash eproms? - PSP3D.com - Sony PlayStation Portable News, Homebrew, Hacks, Reviews, Videos, Mods, Forums

zorken · #1 (**permalink**) 03-13-2006, 04:50 AM

I am new to this forum.

I have read some threads about downgrading....

Why cant u just do it the hard way and just write over the flash eprom that has the image of the operating system?

cheers

proud owner of a psp and a owner of a flash writer/reader

;-)

Preacher · #2 (**permalink**) 03-13-2006, 04:57 AM

try seaching the forum and you will find your answer!

kernal32 · #3 (**permalink**) 03-13-2006, 05:25 AM

Its possible, but not heaps is known about it currently. Few groups working on doing it, but no ones been successful yet.

Start testing! =P

traviss · #4 (**permalink**) 03-13-2006, 11:55 AM

Few people are doing this because it is more complex then you see it.

The PSP's EEPROM (Note, it is an EEPROM and not an EPROM) is not only an EEPROM, no no, it is a MCP (Multi Chip Package) Which contains the NAND and the DDR SDRAM so removal of the chip would be easy, but when you went to put it back on, if there was just the slightest timing discrepency, the PSP would not work.

Our team, Three Four the Win, has proper datasheets of the chip, motherboard layouts (Including trace lables), a Universal EEPROM Programmer, and the know how to go about doing this, it is not recommended for the average user, currently, but we hope to develope a clip-on device that will allow anyone who can open their PSP to unbrick, or downgrade their PSP, hence the two project names of Unbricker and Universal Downgrader

Read more at our homepage : http://www.134.xbox100.com

sikheadtom · #5 (**permalink**) 03-13-2006, 12:15 PM

anyway welcome to psp3d

nathan151 · #6 (**permalink**) 03-13-2006, 12:17 PM

welcome and enjoy your stay

TchuBacha · #7 (**permalink**) 03-13-2006, 12:25 PM

Cool im glad someone is working on an unbricker.

sidestep · #8 (**permalink**) 03-13-2006, 01:39 PM

if we can flash the psp then we ca unbrick them no probs