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>  PSP 2.71 Downgrader Released!
  Post#1 | Sep 1 2006, 23:51 + Quote Post Go to the top of the page
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Lite Version released and bug fix released

Happy news to all those with 2.71 FW a downgrader has been released

Article from PSPUpdates

As some 2.71 PSP’s say hello to the world, others will be saying goodbye at the same time as a downgrader has been released just a few moments ago!!

For this one occasion, I grant you permission to jump on your computer’s desk; jumping up and down until you have broken your desk. The reason for such a command is that after you have done it you probably won’t care about the desk, as you have just read that a 2.71 downdater (downgrader) has now been made available! Yes, that’s right – all you 2.71 owners (who do not have a TA-082 motherboard) will be able to downgrade your PSP to firmware 1.50.

Using the recently exploited vulnerability in the tiff library, Dark_Alex (with the help of Mathieulh) has managed to create a 2.71 downdater. You are probably wondering how they managed to create this so fast, and the answer is simple. This 2.71 downdater is a port of the 2.50/2.60 downdater that was released slightly over 2 months ago. This new downdater, like the previous one, will not work with TA-082 PSP’s. However, if you do happen to have such a PSP – 0okm has been working on a softdown (no hardware changes required) method, so you are not left in the dust.

The procedure for installing, and successfully downgrading your PSP comprises of several steps in which one must be very careful. Since this downdgrader is a port of the 2.50/2.60 downdater – it functions the exact same way – just without the need for GTA. So, all the installation instructions may seem extremely familiar as they follow some of the exact same procedures as the original downdater. There were several bricked PSP's during testing but this latest version appears to be stable, but please remain cautious. As always, please follow the directions exactly as they appear. If you choose to proceed with this downgrader, use it at your own risk as bricking may occur.

If you are anxious to prepare for the downgrader (which you are, of course) check out our previous coverage of the 2.50/2.60 Downgrader as the installation process will most likely be nearly identical.

We will have the download and full details available in just a few short hours, so be sure to stay with QJ.NET and PSPUpdates for all the details! This post will be updated as more info comes streaming in!

Update #1: Just a few minutes after posting and already an update! According to the developers, the code for the downgrader is still a bit unstable, so it may not start up successfully on the first try - hence the codename "Old Car." However, it is stable once it actually begins to run and there should not be any problem with bricking if the instructions (soon to be provided) are followed precisely.

Also, as mentioned above, Mathieulh & Dark_Alex did brick several of their PSP's during the initial testings. If you feel like donating to their cause, you can do so here. (Also, mad props to Xairu and Birdman for their bravery in testing the downgrader, as well as joshrulez2 who was the first tester - and the first brick!)

Update #2: For your convenience , and to save you time, we have taken the liberty of giving you the instructions for the 1.50 helper/dumper program. This program is required for one to downgrade their PSP as it dumps important 1.50 files from a firmware 1.50 PSP. Here's how you can obtain these files (do not ask for them, they are illegal to distribute) -

1.50 User Instructions

Copy the folders downhelper and downhelper% from the folder 1.50 HELPER folder to /PSP/GAME/ in your memstick. (The DownHelper can be downloaded below)

Obtain the 1.50 update EBOOT and put it in /PSP/GAME/UPDATE in your memstick. You may find the 1.50 update in our download site here.
Initilize the downhelper program.
It will dump your flash and some files from the updater eboot to the memstick. (These files are illegal under US copyright laws, so please do not distribute them in the comments or on our forums)
After that, the program will exit. You can now delete the updater from /PSP/GAME/UPDATE
You'll notice that you have a new folder in the root of your memstick called "DOWNDATER". (See diagram on right for arrangement - click to enlarge)

That's the folder you'll have to send to a 2.71 owner to let him downgrade.
2.71 User Instructions

Download the Downgrader below and copy the files inside MS_ROOT to the root of your memory stick.
Wait for someone with 1.50 to pass you a folder called DOWNDATER and copy it to the root of your memstick.
It is recomended that you have the psp at more than 50% batteery and connected to AC
Go to the XMB Photo viewer.

At this point will one of the following things:

You'll see a full red screen. This indicates that the downdater is doing its job. Wait for it to finish. When it finishes it will crash on purpose. Restart your PSP manually and you'll probably have a 1.50 if nothing went wrong.
You don't see the red screen. This indicates that the downdater code has not started to execute. (even if the memstick blinks (or not), It doesn't matter! If the screen is not red, you can safely restart the PSP at this point and try again).

This happens because of instability in the tiff. Don't worry, just restart the PSP and keep trying until you reach the red screen of the downdater. The downdater code is NEVER executed partially. It's either executed totally or nothing. It depends on "luck" but usually the downdater will start to execute in a average of 1/10 times. Things that may increase the probabilities:

- A fresh formatted memory stick.

- A 32 MB memory stick (and fresh formatted)

Update #3: Don't you love it when things go ahead of schedule? The downgrader is here and can be downloaded below! This has been tested by a few people and confirmed, but who knows what the results will be now that it has been released to the public! Download at your own risk! Read the install instructions above!

You should be very certain you feel comfortable with the procedure. If you don't, do not attempt to downgrade your PSP. The crew at Nooz.eu have already stated that a Kernel Mode eLoader is possible for 2.71, so if you are unsure about downgrading just be patient and wait for a more risk-free alternative to become available!

For those of you who have 2.01 - 2.60 Firmware but DO NOT have GTA and want to use this downgrader by taking advantage of the new libtiff exploit, you can find the 2.71 Firmware Update at DL.QJ.NET.

IF you want to try downgrading this then go ahead DO NOT DOWNGRADE IF YOU HAVE A TA-82 motherboard to see if you have a TA-82 then look at the picture in this article here

The lite version of the downgrader comes with a GUI and screens guiding you through to downrgading process

now for the download

Download:2.71/downhrader Bug fix
Download2.71 Lite downgrader
You can't downgrade with the proper 1.5 files, if you need them Register and/or PM me

Source PSPupdates

This post has been edited by The "waffler": Sep 2 2006, 22:20

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  Post#2 | Sep 2 2006, 10:56 + Quote Post Go to the top of the page
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This looks a great downgrater.

Only problem for me is i dont have TA-082 but i have 2.80 cry.gif

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