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Harry1™
This is taken directly from the downgrader pack

303 HEN Noobz Downgrader Guide
------------------------------

Here is a guide for downgrading any current PSP hardware version
(TA-079 - TA-086) from firmware 3.10-3.50 to 1.50.

VERY IMPORTANT:
If you have a TA082+ motherboard and you downgrade to 1.50,
currently you will be unable to upgrade to 3.30+ Sony firmware.
This is due to Sony blocking updates when the PSP has been
modified to run 1.50. There will be an application released
later which will allow users to revert the changes. If you
are using a TA082 motherboard then I would suggest just using
1.50 or OE until an application is released.

IMPORTANT:
The Noobz team is strongly against piracy, and we're not just
saying that to cover our butts. When you pirate games, you're
removing the incentive for game and console makers to continue
making fun things for us to play with. We are releasing this
downgrader because we believe that using your PSP to its full
potential and being able to customize it and run homebrew code
is a fair use right that should be available to everyone.
Please purchase games that you intend to play. Thanks!

Requirements
------------
In order to downgrade a 3.50 PSP you will need the following:

- Lumines (EU or US version only currently)

- 3.50 Downgrader (this package)
http://www.noobz.eu/joomla/index.php?optio...einfo&id=12

- 1.50 Update
http://harry1.psp-spot.com/Firmwares/1.50.rar

- 3.50 Update if you are on firmware 3.10-3.40
http://www.psp-hacks.com/file/1164

* WARNING, ANY DOWNGRADER HAS A CHANCE OF BRICKING A PSP. WHEN A *
* PSP IS BRICKED YOU WILL NOT BE ABLE TO USE IT ANYMORE. WE HAVE *
* DONE A LOT TO TRY AND MINIMISE THE RISK, BUT THERE IS ALWAYS *
* SOME LEVEL OF RISK WHICH YOU MUST ACCEPT IF YOU WANT TO *
* DOWNGRADE *

Instructions
------------
Here are the steps to downgrade any 3.50 PSP to 1.50:

1 - If you have a 3.50 PSP skip to step 6

2 - Download 3.50 update from here:
http://www.psp-hacks.com/file/1164

3 - Unzip and place the file in :/PSP/GAME/UPDATE

4 - On the PSP, run the 3.50 update from the memory stick under the Game menu.

5 - Delete :/PSP/GAME/UPDATE

6 - Copy the contents of the folder MS_ROOT from the 3.50 downgrader ZIP to
the memory stick

7 - Unzip the 1.50 update to a temporary folder. Rename the EBOOT.PBP to
UPDATE.PBP and copy it to :/PSP/GAME/UPDATE/ . DO NOT
OVERWRITE PSP/GAME/UPDATE/EBOOT.PBP!

8 - Load Lumines and press x to start the game

9 - The screen will clear to black and fill with a light blue colour, then
the PSP will reset itself

10 - Check that HEN is running by going to system settings, then to
"System Information" and it should show up as system version
350 HEN

11 - If it is showing up as HEN then go to the memory stick and
run the x.yz update

12 - If you have an unpatched TA-082 or higher motherboard, you will be
prompted to allow the downgrader to patch your motherboard so it
can be safely downgraded. The downgrader will not let you proceed
without patching, if your motherboard requires it.

13 - Before the downgrader does anything to your PSP it will ask
for you to agree to what it is doing, if you no longer want to
continue press the Right Shoulder Button (R-TRIGGER).

14 - Once you have agreed to start the downgrade do not unplug the
PSP, or try and restart it

15 - Once finished the PSP will ask you to press X, and reset itself

16 - If it comes up saying that the settings are corrupt, press x
to continue, this will mean you will need to re-enter the
settings for network connections into your PSP, otherwise go to
step 18

17 - Load the included NetConfigBackup application in your PSP, and select to
restore, this will take the backup that was done of the network config
that was done automatically during the downgrade.

18 - All done now :-) Hopefully you now have a 1.50 PSP. Enjoy it responsibly.


Troubleshooting
---------------
- If when trying to restore the network config using netconf backup you
find that it gives you an error on the downgraded 1.50 PSP, try adding
a temporary network config, then deleting it and run the netconf backup
again.
Wizard Of Oz
I have successfully used the downgrader. It works biggrin.gif
DeMoNiC
QUOTE(Wizard Of Oz @ Jun 26 2007, 08:25 PM) *
I have successfully used the downgrader. It works biggrin.gif

that's good enough for me. i just need a copy of Lumines >_<
adw888
Thanks for posting the guide Harry1, it'll give me something to link to for downgrading 3.50.

EDIT: The download link doesn't work for me; this one does though: http://www.noobz.eu/Downgrader350.zip
sPo0n3r
Great Work Harry for posting the guide! I haven't tried downgrading mine, but am pretty sure that it will work!!! Thanks to the creator of this downgrader for 3.50 FW....
RealG187
I cant find Lumines, they say games are discontinued if they are not profitable or unpopular, well since there is this downgrader I think Lumines will be quite profitable and popular, but if they ever would start making it it probaqbly would be patched, but I had a hard time getting GTA LCS, I was lucky to find it, and since it was rated "M" I was lucky they never asked for ID as I am 16 (close enough t to 17, I wasnt gettting LCS to play, but to hack, and still anything in there I have probably already seen and its not real violence), since this game is "E" the second someone brings it in I can get it, no ID, no waiting for Unlcle to get it for me, no hoping they dont ask!
HK88
It does indeed work. Very easy too. smile.gif
Darkatomz
meh. ill wait for an easy downgrqader.
quickett
As soon as I get my replacement screen I will be downgrading.
jonno12345
cool this is gonna help alot of my friends out
Moondeath
Oh yeah.. this is definately going to make alot of peeps happy.. some people accidently went past 303 and got stuck now there is a solution. tongue.gif Lucky for me I used the 303 downgrader or I woulda been bored waiting for this.
Anarchist86ed
why does the downgrader says downgrader for 3.03?
Anarchist86ed
I don't get this. what are the checkworks and SRC folders for???
adw888
QUOTE(Anarchist86ed @ Jun 28 2007, 07:35 PM) *
why does the downgrader says downgrader for 3.03?

Do you mean the guide at the top?
It was probably modified from the (very similar) 3.03 downgrader instructions.

QUOTE(Anarchist86ed @ Jun 28 2007, 10:32 PM) *
I don't get this. what are the checkworks and SRC folders for???

SRC is the source code. checkworks just has a tool for checking the validity (to some extent) of homebrew PBP files.
You can ignore both of them.
Just don't ignore the instructions and readme for the downgrader. smile.gif
RealG187
Maybe (with skill) we can use this source and test and see if GTA and Lumines arent the only games with buffer overflows and exploits!!
dtvhn21
well i'm gonna get a copy of lumines... it's worth of an investment tongue.gif
adw888
QUOTE(RealG187 @ Jun 29 2007, 12:21 AM) *
Maybe (with skill) we can use this source and test and see if GTA and Lumines arent the only games with buffer overflows and exploits!!

With a lot of skill; yes. But if you had that much skill you wouldn't need the source in the first place. dry.gif
RealG187
3.51 is out, probably to combat the downgrader:

http://www.us.playstation.com/psp/downloads/systemupdate
Chris24
3.50 downgrader.. hmm sony will reach 9.0 soon biggrin.gif
BucDan
is the game lumines 2 or the first lumines?

EDIT...NVM..its the first one...

and man dude ever since the news of downgrade came out, the prices are now $25+ but back then like a couple weeks ago, they were sellin for 5 bucks...man i hate this... i would see the game rental areas to see if they have the game for me to rent
RealG187
f*** dark alex left da scene! check his site, does this mean no more oe?
CyanSupra
Now any version of lumines can downgrade?
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