By 
After a long awaited time, the a PSP downgrader is finally available! This will allow all PSP owners who have upgraded their PSP to v2.0 to downgrade all the way back to v1.5. (this version will allow using homebrew applications) Also if you have v1.51 or v1.52, you will need to upgrade up to v2.0 and then you will be able to downgrade. If you do downgrade from v2.0 you will always be able to bring back v2.0 by doing the standard update procedure once again.
To downgrade do the following: (read entire post first! notes @ bottom)
- Create the X://PSP/GAME/UPDATE directory if it doesn’t exisit.
- Copy EBOOT.PBP (v1.50) into X://PSP/GAME/UPDATE folder.
- Unzip the PSPdowngrade.zip package and open the folder.
- Copy overflow.tif into X://PSP/PHOTO/ folder.
- Then copy h.bin into the root folder. (X://h.bin)
- Finally copy index.dat into root folder as well (X://index.dat)
- Make sure your AC adaptor is connected.
- In your PSP enter the Photos section, which will launch a little app.
- You will need to wait ~30 seconds and then restart your PSP.
- Then finally Game Menu and launch the v1.5 updater (downgrade).
- Follow instructions and then at 99% an error should popup.
- Thats normal so just restart the PSP and it should show an error.
- Now restart the unit one more time and the PSP should be ready.
Notes: Make sure there are no other Photos other than the overflow image present in the photos folder during this “downgrade” procedure. To restart hold the power button for about 10 seconds once it is off wait 10 seconds and turn it back on. All credit goes to MPH for creating this hack to downgrade PSPs. Please do not use this for illegal purposes (piracy), but use it to use legal homebrew apps and opensource type games. The PSPdowngrade.zip will inculde all of the files required to downgrade your PSP.
Warning: Skatter Tech is only providing information on how to downgrade the PSP. If you PSP does by chance get damaged due to something you tried on this site, we are not going to be responsible so do these at your own risk.
Download: PSPdowngrade.zip — DOWNLOAD REMOVED
Links: PSP Updates | Toc2rta Wiki
Affilate: HackMyPSP (Plenty of great PSP Hacks!)
UPDATE: RUN HOMEBREW ON PSP v2.60
INSERT ANY GAME DISK AND GO TO GAME FOLDER.THERE WILL BE A 2.0 V UPDATE THERE.BEWARE IF IT SHOW 2.6V.NEVER UPDATE TO 2.6 .
runind v1.5 bought champ man which asks me to upgrade to v2.0 before the game will play… don’t want to obviously how do i ge tit to work without upgradind?
I have v2.0. I have did all the things that standing in the installation. but my psp says you have v2.0 you don’t have to update…
I know my problem now it’s working :D thanks for the files
the tiff file in photos on the psp version 2.5 says corrupt file. i’ve edited the tiff and now it shows a photo thing there but freezes. if any1 can help with the freezing problem,then we can sort out the hack for version 2.5. thanx. P.S i have many games in iso which i have ripped from umd’s onto my computer so if ny1 wants e-mail me at h_abdoola786@yahoo.com. shup
i have version 2.01, it wont let me create or copy the update folder. can some1 help a broda out pls???
sculpture, you are not suppost to edit the .tiff file. it is suppose to show it as corrupt. if you edit it then the hack will not work! and the .tiff hack to downgrade can only be used from 2.0 -> 1.5. Also it isn’t a very smart thing to advertize that you are distributing games illegally. :)
STEVE, If you have 2.01 you currently have no way to downgrade your unit! There should be some alternative son so be patient.
P.S. you may not need to downgrade at all soon !!! This is because the psp hack group has figured out a method to play homebrew on both 2.01 and 2.50! Keep checking http://www.skattertech.com for updates!
MY COMP SAYS THIS IS A VIRUS
Crap!! Every time I try to copy overflow.tif to my PSP it says that the file has a virus called PSP.Brick. But alot of sites say its harmless. HELPY!
sony’s psp says its a virus on purpose to scare people so they don’t try to upgrade. i checked the files one more time with multiple virus scans and they are clean. the downgrade worked perfectly for me. i had 1.52 and had upgraded to 2.0 then i downgraded back to 1.5 and no problems what so ever. i infact used the files from this site, but i read instructions on other sites just to make sure this site was right. dont be tricked by Sony’s propaganda donwgrade your psp.!!!
No no no, it wont let me copy it! Every time I try it cancels the copying progress! (Just so you know I have Symantec Anti-Virus)
I have got v1.50 now.WOOHOO! thnx 4 da files n help
but nowi have upgraded to v2.00. About 95% of homebrew works but it is still godd.WOOHOO i got v2.00 and homebrew.
i placed the overflow.tif file in the photo folder but nothing happends on the psp screen it shows me “there are no images” WHY??? why is it not working somebody help
what firmware version psp u got chris?
version 2.00
Have u got any other photos in there? if u have then take them out n jus put overflow.tif in there.
Haw downgrade 2.60 fw
u cant downgrade v2.60
Hey does anybody have Symantec Anti-Virus? If so how do you temporarily turn it off or put something on a exeption list
Hello To All, NO MORE DOWNGRADING REQUIRED!!!
HomeBrew Now Works On PSP V2.60!!!
http://www.skattertech.com/2006/02/psp-v260-homebrew/
Um, Little problem here. I have done everything, but when it gets to the second error, I wait 30 seconds, reboot it and the error comes up again. I repeat the process and yet again I get the error. This keeps on happening. PLEASE HELP!!!
to try downgrading for 2.6 to 1.5
Hi,
I’ve already done the downgrade from 2.0 to 1.5. The UMD Emulator has been working fine. One day I decided that I wanted to upgrade back to 2.0 to play Madden 2006, the upgrade is not working. when I click on the PSP update 2.0 it brings me to a screen and there is no text on the screen. I only see an ‘X’ on the bottom of the screen so then I hit the X button and it bring me to another screen that also has NO Text. I only see an ‘X’ and a ‘O’ on the bottom of the screen.
HELP!! I’m stuck with 1.5. I can’t seem to upgrade back to 2.0
Any suggestions