Nuovo exploit per 2.5/2.6

[SubsOnicO]

Originalmente inviato da weltall

il trucco sta qua:
probe = (unsigned int*) 0x8801A5B4;
probe[0] = 0;

sisi sono d'accordo ahsuhaushuas

[Rey_619]

aspetta aspetta wel non ho seguito molto perchè sono in vacanza e mi connetto una volta a settimana se tutto va bene, ma questo non vuol dire iso loader su 2.5? basterebbe un iso loader che utilizzi poca ram no?

[weltall]

si e il gioco dove lo metti? no l'iso loader ve lo potete scordare è un load module non un load exec questo vuol dire che exploit loader gta rimangono in ram. a meno che non trovano un modo di eliminarli una volta avviato l'elf in kernel mode (teoricamente possibile ma non sempre da buoni risultati e bisogna vedere se si riesce ad eliminare gta)

[shassino]

veramente usando questo exploit hanno fatto una versione di prova di un downgrader per 2.5/2.6

Downgrader Test for 2.50/2.60
To be used at your own risk. It is an UNTESTED software.

Download link:
http://rapidshare.de/files/24404395/..._test.rar.html

Password: I_Use_This_at_My_Own_Risk

I copy and paste the readme here. Read it carefully.

------------------------------------------
Downgrader Test for 2.50/2.60 by Dark_AleX

This is an *experimental* downgrader for 2.50/2.60

Experimental means here that it has not been tested on a real device, althought it has a theoretical base that it could work.

This software is free and untested, and i'm not responsable if it causes damages to your psp.
If you use this software, you agree that you are using this program at your own risk and that you won't blame the author for that.

"Someone told me that a downgrader for 2.50/2.60 was impossible. How does this work?"

This one uses another more risked technique (and i repeat: untested) than the mph downgrader.
It uses some sony libraries found in the 1.50 updater to perform the most critical steps, the logical format of the flash, and the ipl writing. See technical details for more info about how it works.

This software requires that someone with a 1.50 runs a little program and send you the output so you can init the downdate process. (by legal reasons i cannot provide those files directly, that's why this is needed).
The 1.50 program is TOTALLY safe, it only dumps the flash of a 1.50 user and it also extracts some special prx's found in the 1.50 updater.

Instruction for the 1.50 user
-----------------------------

1) Copy the folders downhelper and downhelper% from the folder 1.50 HELPER folder to /PSP/GAME/ in your memstick.

2) Obtain the 1.50 updater and put it in /PSP/GAME/UPDATE in your memstick.

Some download links for it:

http://www.psphacks.net/files/PSPFirmwares/1.5/

http://dl.qj.net/PSP-Firmware-1.50-F.../163/catid/163

3) Init the downhelper program.
It will dump your flash and some files from the updater eboot to the memstick.

4) After that, the program will exit. You can now delete the updater from /PSP/GAME/UPDATE

5) You'll notice that you have a new folder in the root of your memstick called "DOWNDATER".
That's the folder you'll have to send to a 2.50/2.60 to let him test the downgrade.



Instructions for the 2.50/2.60 user
-----------------------------------

1) Copy the folder the DOWNGRADER/2.50/DOWNDATERTEST if you have 2.50
or DOWNGRADER/2.60/DOWNDATERTEST if you have 2.60 to /PSP/GAME/ in your memstick

2) Wait someone with 1.50 to pass you a folder called DOWNDATER and copy it to the root of your memstick.

3) Init gta and the eLoader

4) In the eLoader menu, choose the downdater test. WARNING: the program won't output any display and any warnings, it will init the downgrader process inmediatelly.

5) You'll see the your memstick flashing. That means that your psp is being flashed from the memstick.
You won't see any type of output in the screen (this is for safety). When the memstick finishes of flashing, WAIT at least a minute, and then reinit your psp by holding the power button.

6) That's all. If all went right, you'll have 1.50. If it went less good, you'll still have 2.50/2.60. If all went wrong, you'll have a bricked psp(except in the case you have the modchip) Remember that you have accepted that risk.


Technical details
------------------

This program performs the following operations.

- It loads the ipl_update.prx and lflash_fatfmt.prx from the 1.50 updater.

- It performs a logical format of the flash0 partition using the function
sceLflashFatfmtStartFatfm t found in the lflash_fatfmt.prx

- It writes a dump of the 1.50 flash0 to the flash0.

- It writes the Initial Program Loader (Ipl) using the functions sceIplUpdateClearIpl and sceIplUpdateSetIpl from the ipl_update.prx module. The ipl is embedded in that module.


Other considerations:
--------------------

- Users with TA-082 psp's shouldn try this. Also, it may be better that at the beginning, only users with a 2.50/2.60 NOT from factory (they updated from a below firmware) try this.

http://forums.maxconsole.net/showthread.php?t=22951

[met98]

conviene non testare subito il downgrade xche funziona solo a poche persone, le altre invece bricca la psp

[Cj|TraMat]

Speriamo in bene... secondo voi riusciranno a fare un downgrade che funzioni?

[shassino]

Secondo me si stando a quanto dicono su maxconsole è solo da testare e perfezionare, purtroppo molte psp non digeriranno il testing

[Cj|TraMat]

WORKING 2.5/2.6 DOWNGRADER BETA!!!!!

Thats right! Dark_Alex has released a new BETA with some help from Mathieulh and Yoshihiro from SonyXTeam!

Remember, this is still a BETA and could possibly brick your PSP! There are a lot of reported successions though! Use this downgrader at your own risk!
Requirements:

• Your PSP CANNOT be a TA-082 (If you do have this PSP version, it may result in a brick)
• Your PSP CANNOT be a factory 2.50/2.60 PSP! It had to have been updated once before from a previous version or the downgrader will not work!

Adesso le cose si fanno davvero interessanti!!!!
Peccato che posseggo una 2.5 "nata così" e nn lo possa provare... cmq aspetto molto fiducioso!

Ecco il link alla news originale!

[ps2lover]

é uscita la versione funzionante (pare) del downgrader. Questa versione sembra andare bene ma non può usarla chi ha la psp con scheda madre ta-082.
Come dicono anche gli autori chi la usa lo fa a suo rischio e pericolo.

[speddish]

Ciao ragazzi ho letto la news...mi sorge un piccolissimo dubbio...chi non avesse una psp 1.50 per fare il dump? si puppa? ma soprattutto chi ha già una 1.50 cosa cxxxo se ne fa di un downgrade?
Magari ragiono male io...Comunque se qualcuno sa un metodo alternativo per i
ottenere il dump faccia sapere...
byez