PSP Downgrader Discussion

[Stash23]

Basically what the title askes for.... Is there any PSP downgraders from 2.7 to 2.0 or 1.5?

[GHDpro]

Afaik NO.

But there was recently an exploit discovered that allowed code to be run in all
versions of the PSP firmware from v2.0 and up. That code ran in "user mode" though,
while certain applications will need "kernel mode" access to the PSP.

http://pspupdates.qj.net/category/Firmware/cid/57

Er... second article on that link actually DO lists a downgrader, but only if your PSP
is "old enough" -- as I suspected newer revisions of the PSP are locked out of downgrading.

But er... have a look at that site...

[TchuBacha]

There is a downgrader for firmware 2.71 which can take you back to 1.5 (You can then upgrade again to which firmware you like, you can even downgrade again to 1.00)

This is part of a guide im creating that will help you to downgrade from what ever firmware your on (Except 2.8 and so long as your PSP motherboard is compatible)


First check that your PSP is compatible
Turn your PSP around so that you are facing the UMD drive. Open the drive and if you can see on the green PCB in the top right corner “IC1003” then your PSP has the motherboard version TA-082 and cannot be downgraded.

At present someone is working on a downgrader to 1.5 for TA-082 but in will require modified firmware files for each individual PSP.


1.5 Help instruction
These step ae to be preformed on a PSP that has firmware 1.5
No other version will work.

1. Download the helper program from
http://rapidshare.de/files/31704667/..._2.71.zip.html

2. Extract the contents somewhere safe.

3.Copy the two files downhelper and downhelper% (They’re Kxploited) to
X:/PSP/GAME.

4. Download the 1.5 update, extract it and copy it into X:/PSP/GAME/UPDATE.
http://rapidshare.de/files/31715261/EBOOT_1.50.zip.html

Your memory stick should look like this -
X:/PSP/GAME/UPDATE/EBOOT.PBP (1.5 Update)
X:/PSP/GAME/downhelper/EBOOT.PBP
X:/PSP/GAME/downhelper%/EBOOT.PBP

5. From the XMB go to
Game>Memory Stick>downhelper (Ignore the corrupted file)

6. Let the program run. It will dump files from the update.
After it has finished, you should have a new folder on your memory stick called DOWNDATER.

7. Send this folder to your friend who is trying to downgrader from 2.71.

2.71 User instructions
I recommend that you perform these steps on a freshly formatted memory stick. Backup your important stuff first!

1. To format go to Settings>System Settings>Format Memory Stick

2. Copy the folder DOWNDATER (The folder your friend sent you) to the root of your memory stick

3. Download the downgrader from
http://rapidshare.de/files/31705805/...er271.rar.html

4.Extract the zip file and copy the file hw.tif to X:/PSP/PHOTO and copy the file
d.bin to the root of your memory stick.

5.Plug the charger in and check that your battery is over half full.

6.On the XMB go to Photo and your PSP should freeze
If your screen has gone red then the downgrader is working. Leave the
program to run and don’t take the charger or battery out. After a while the
PSP will reset its self.

7. Im not too sure if this happens with this downgrade but on the old GTA method of downgrading, after downgrading you would get a disc reading error. If this happen just take the battery out and put it back in.

8.Congratulations you are on 1.5

It isn’t necessary but I recommend that you update to 2.00 and downgrade
via the MPH downgrader. Updating to 2.00 and downgrading will
give you your own firmware files and not a dump from other people.

[Stash23]

Okay well, um, I could kinda grasp on what is being told here but now I have a question.... For one, these instructions:

1.5 Help instruction
These step ae to be preformed on a PSP that has firmware 1.5
No other version will work.

1. Download the helper program from
http://rapidshare.de/files/31704667/..._2.71.zip.html

2. Extract the contents somewhere safe.

3.Copy the two files downhelper and downhelper% (They’re Kxploited) to
X:/PSP/GAME.

4. Download the 1.5 update, extract it and copy it into X:/PSP/GAME/UPDATE.
http://rapidshare.de/files/31715261/EBOOT_1.50.zip.html

Your memory stick should look like this -
X:/PSP/GAME/UPDATE/EBOOT.PBP (1.5 Update)
X:/PSP/GAME/downhelper/EBOOT.PBP
X:/PSP/GAME/downhelper%/EBOOT.PBP

5. From the XMB go to
Game>Memory Stick>downhelper (Ignore the corrupted file)

6. Let the program run. It will dump files from the update.
After it has finished, you should have a new folder on your memory stick called DOWNDATER.

7. Send this folder to your friend who is trying to downgrader from 2.71.

...would seem that I would need to have a PSP with firmware version 1.5. Unforunatly for me, I don't have that.

And these instructions:

2.71 User instructions
I recommend that you perform these steps on a freshly formatted memory stick. Backup your important stuff first!

1. To format go to Settings>System Settings>Format Memory Stick

2. Copy the folder DOWNDATER (The folder your friend sent you) to the root of your memory stick

3. Download the downgrader from
http://rapidshare.de/files/31705805/...er271.rar.html

4.Extract the zip file and copy the file hw.tif to X:/PSP/PHOTO and copy the file
d.bin to the root of your memory stick.

5.Plug the charger in and check that your battery is over half full.

6.On the XMB go to Photo and your PSP should freeze
If your screen has gone red then the downgrader is working. Leave the
program to run and don’t take the charger or battery out. After a while the
PSP will reset its self.

7. Im not too sure if this happens with this downgrade but on the old GTA method of downgrading, after downgrading you would get a disc reading error. If this happen just take the battery out and put it back in.

8.Congratulations you are on 1.5

It isn’t necessary but I recommend that you update to 2.00 and downgrade
via the MPH downgrader. Updating to 2.00 and downgrading will
give you your own firmware files and not a dump from other people.

...would need the DOWNDATER from the PSP firmware 1.5. If by any chance I've seem to have lost you with the posts above; what I'm trying to say is that the DOWNDATER folder would be created off of firmware 1.5, which i don't have.

The second set of instructions would seem almost perfect expect for two things... I have firmware 2.70 that im trying to downgrade (sorry for the confusion) not 2.71 (I don't know if the process would still be compatible with 2.70 but I'm not going to take chances). AND... the DOWNDATER folder is a necessity , which I can't obtain because I would need 1.5 to create it. If anything, (LOL), if you (or anyone) could help me with my problem, I'd really appreicate it. Oh and by-the-way, if I read your instructions wrong TchuBacha, please help me in anyway possible. If you have to, please clarify and everythign you've written.

PS: Thanks so much for your support and hope the guide is a success.

[TchuBacha]

1. The first instructions are for create a dump of the 1.5 firmware files which can only be preformed on a psp with firmware 1.5.

2. If your on 2.7 then you can upgrade to 2.71 (Dont update past 2.71, because 2.8 cant be downgraded)

3. Check your PSP motherboard version first. If you atempt to downgrade the wrong motherboard (I.E one with "IC1003" on the inside of the UMD) the PSP will brick (Break).

[ramzak]

so then you need a buddie with 1.5 -_- um could someone give me the 1.5 required files? chewbacca can i ask for your help(Il mail u my email)??

[belmont]

If you search you can easily find sites that have full packs of the downgrader with all the required files included.

[hailey-04]

I need the 1.50 down dater folder!!! What sites can I get the folder from? and if it is the wrong folder what would happen to my psp? How do I know it's the right folder?

[TchuBacha]

I need the 1.50 down dater folder!!! What sites can I get the folder from? and if it is the wrong folder what would happen to my psp? How do I know it's the right folder?

I think the program that does the reflashing of the NAND chip check the folder to see if it has the correct files in the correct places. I cant give you a link to in cos it contains copyright material from sony. Just google for DOWNDATER and youll eventully find it.

[hailey-04]

I downloaded a file from the internet and it says [DOWNDATER100] is that the folder i need to get from a friend? If not can MY friend send it to me!!