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PSJailBreak Reverse-Engineering Details Begin to Surface


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222w ago - Earlier today we reported that the PSJailBreak PS3 modchip is easily dumped and that PSJailBreak clones are already on the way, and now some PlayStation 3 developers are working on reverse-engineering the costly USB device in hopes to make a less expensive or free scene alternative available soon.

Tsujin, knightsolidus and bushing have made brief attempts at determining the PSJailBreak IC chip and pin-out, while Neme6 of Logic-Sunrise (linked above) has also shared his findings thus far.

More pictures are available HERE for those curious, and to quote, roughly translated on the linked pics:

"Many teams are studying the JSP to try to clone a low cost and how it works. From the photos released, I tried to determine the electronic design of PSJ.

Here is the result of my work and my observations. Feel free to post if can lighten the shadows that remain.

First ICP is probably the type PIC18F declination 4455, 4550, 4458, 4553. The size of the EEPROM is 256 bytes."

Comments:

Components (red dots)
A: Resistor, 1K
B: LED
C: LED
D: Resistor, 1k
E:?? Resistor ?? Resistor??
F:?? Capacitor ?? Capacitor??
G:?? Resistor ?? Resistor??
H:?? Resistor ; 1K (Pullup resistor) ?? Resistor, 1K (pullup resistor)??
I:?? Capacitor ?? Capacitor??
J: Capacitor, 100nF (Decoupling cap)
. . : XTAL

•The blue dots A, B and D control the LEDs.
•The blue dots K, L, G and H are for power (Vdd, Vss).
•I suppose the blue dots M, I and J are to program the PIC (ICPGC, ICPGD, / MCLR).
•Points E and F are blue and OSC1 OSC2. They should be connected to XTAL (orange dots A and B).
•And the GND (file alpha) through two 22pF capacity.
•The orange dot F, there should be a link with USB.D-(I can not quite see from the photos).
•Maybe the orange dot at point C is connected blue M (ICPGC).
•Maybe the orange dot C is connected to pin 33 (/ ICRST).
•I guess the orange dot E is connected to a via (through hole) noted alpha.







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Comments 39 Comments - Go to Forum Thread »

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PS3 News's Avatar
#39 - PS3 News - 222w ago
Please use the new thread here to resume discussion guys: [Register or Login to view links]

xantra's Avatar
#38 - xantra - 222w ago
I have made a schematic with your details. Someone can put off the for confirme connections under it?

wallace80's Avatar
#37 - wallace80 - 222w ago
Quote Originally Posted by daveribz View Post
It can run unsigned code and it makes all debug options available AND functional

go back and watch all the videos now available online, do you see any of the options in the XMB that debug units have?

the answer is no. it can run unsigned code yeah but it doesnt convert units to debug out of the box, most likely a debug firmware will have to be flashed first.

dinzy's Avatar
#36 - dinzy - 222w ago
I wouldn't realize anything until I see it 100% confirmed. Has anyone actually demonstrated unsigned code? And if so how does that guarantee custom firmware? This device requires 3.41 firmware to run, meaning it might run after the 3.41 FW boots.

If it is a true Sony Jig, they may make it so each FW has a counterpart Jig FW, rendering this jig only useable with SOny signed 3.41 firmware.

laggmaster's Avatar
#35 - laggmaster - 222w ago
Quote Originally Posted by dinzy View Post
I'm hoping for a clone that will work on FW 3.15. If this thing does not allow Custom FW then I think there is still value in having OtherOS.


As mentioned earlier in this thread you would realize that the ability to run unsigned code will eventually give you custom firmware as we can now install custom .pkg files (ultimately giving us access to all of the functions of the ps3, givin a good homebrew app you could probably do it yourself).... it is believed to be a sony service jig in theory it should work on any firmware under 3.41 because you know that sony is going to change it up for the next firmware update(probably only a day or two off)

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