Re: PSP Downgrader from 2.7 to 2.0 or 1.5
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/31704667/1.50_HELPER_for_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/downdater271.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.