2.5/2.6 Downgrader [TESTED BY ME AND WORKING!] - PSP Forum

kozine · 07-01-2006, 02:08 AM

Hey guys,
As you all know I had a 2.6 PSP. But now I have a 1.5! Dark_Alex has released the new version of his downgrader. I have confirmed this to work. Here is what he said:

Quote:

to be used at your own risk. Althouth IT HAS BEEN TESTED SUCCESSFULY it is STILL A BETA.

PASSWORD : I_USE_AT_MY_OWN_RISKS

BEWARE IT'S STILL UNTESTED ON 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 see http://alex.lan.st/downdater.mp4

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.

"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/

[LINK REMOVED]

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.

RELEASE NOTES : as I am posting this at 4AM in the morning Alex is asleep so the sources and changelog will be available when Dark_Alex will wish to.
At this time only the binary is available

This version also performs logging so be sure to have at least 16MB more on your memory stick before performing the downgrade.

Im not going to give a link to the files. Just go to the PSPUpdates Homepage to see the article.

steveie uk · 07-01-2006, 02:11 AM

Before downgrading, make sure you meet the following requirements -
Your PSP is not a TA-082 (If you do have this PSP version, it may result in a brick

and congrats on having the 1.5 you will now see the power this thing has enioy all the extra benefits *if u know what i mean wink wink*

kozine · 07-01-2006, 02:13 AM

Yup stevie is right.

To check, open up your UMD Drive. If there is text in the top Right hand corner then you have a TA-082. If there is no text(Like mine

) then you are safe to go.

usaf_nwa · 07-01-2006, 02:45 AM

I have to go rent GTA tommrow i guess

Nitrus · 07-01-2006, 03:43 AM

[mod:f5095db951="F34R"]Do not request copyrighted or illegal files in this section.[/mod:f5095db951]

TekDekDude · 07-01-2006, 06:52 AM

If it worked for Kozine it's good enough for me. :D

[mod:dd8e2f623d="F34R"]Do not request copyrighted or illegal files in this section[/mod:dd8e2f623d]

Nitrus · 07-01-2006, 06:55 AM

I am downgrading now.......

-N

Psp-inator · 07-01-2006, 06:57 AM

Quote:

Originally Posted by TekDekDude

If it worked for Kozine it's good enough for me. :D

Would someone mind sending me the files needed too please.

ME too please i dont know anyone with a 1.5

F34R · 07-01-2006, 07:02 AM

There's a link in the first post. It will not stay there long, so you'd better get the files while you can. Normally links to competing sites aren't allowed, but for the time being, I'm going to leave it as is. The links will be removed this evening.

TekDekDude · 07-01-2006, 07:02 AM

Come on someone, I need to leave in like 20 minutes to go to a wedding.