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Art is explosion
Join Date: Jun 2005
Location: In SCE headquarters.
Posts: 555
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Downdater UPDATE July 2: DOWNDATER_FINAL_AUTO released!!
UPDATE : DOWNDATER_FINAL_AUTO released
Auto detects the firmware version (fix done by Yoshihiro) , only one eboot is now required for both 2.50 and 2.60 firmwares
to be used at your own risk.
PASSWORD : I_Use_It_At_My_Own_Risk
BEWARE IT BRICKS TA-082 HARDWARE !
DON'T EVER FORGET TO THANKS DARK_ALEX and YOSHIHRO Thanks to whom all of this has been possible
Downgrader Test for 2.50/2.60 by Dark_AleX
With the help of yoshihiro and mathieulh from SXT
We thanks everyone who bricked their psp in the past while testing the older revisions of this software
This is a WORKING downgrader
This software is free , 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.
[Mod Edit] It has proven to work with factory installed 2.50/2.60 firmwares. This warning removed from the readme.
"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
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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.
[Mod Edit]This folder should contain two folders and two files:- DOWNDATER\DUMP\ (containing the 1.50 dump)
- DOWNDATER\PRX\ (containing the 1.50 UPDATE .PRX files)
- DOWNDATER\inputfl.bin
- DOWNDATER\outputfl.bin
There should be 220 files total when checking the properties and it should be ~13 MB in size.
Instructions for the 2.50/2.60 user
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1) Copy the folder the DOWNGRADER/2.50/DOWNDATER FINAL AUTO EBOOT if you have 2.50
or DOWNGRADER/2.60/DOWNDATER FINAL AUTO EBOOT 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
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This program performs the following operations.
- It loads the ipl_update.prx and lflash_fatfmt.prx from the 1.50 updater.
- Uses sceIoRemove to remove the 2.60 firmware files.
- 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:
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- 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.
P.S. Please stop PMing me about how the downgrader works or where to get the 1.50 dump, thanks.
[Mod Edit]Do not ask or offer help in retreiving the firmware dump; these are illegal and offenders will be issued bans.
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Update the Final version has been released:
Changes: - AC adaptor checks, you now need the AC to be plugged in
- Logs Removed, you can now downgrade from a 32MB MS
The link has been updated, I'd advise you to use this one from now on.
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Special Thanks to gamefreax ( http://www.gamefreax.de ) who helped us durring our tests and is providing us hardware materials
__________________
Cheers to Dark_Alex/Moonlight, Fanjita, Ryoko_no_usagi, Groepaz, Booster, Tyranid, Nem, MrBrown, psppet, emu_kidid and Shadowsan from GCOS, Everyone from the prometheus project. gcmods operators, every one who supported us, and every devs who I forgot to mention on this signature :)
Last edited by NeilR-X; 07-19-2006 at 04:41 PM..
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