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
I id everthing right but when i got the update on my menu and i pressed it, it wooldnt let me downgrade because it said i already had 2.0 and didnt need too. What did i do wrong? please help!!
does this apply to 2.01 firmware????
I tried to downgrade from 1.51 to 1.5
BUT , i upgreaded to 2.0 it fine I opened overflow.tif
and it’s all fine.MY system back to 1.0 BUT when i try to upgade it to 1.5 it said “The system cannot be update program is not applicable for this system” WHY?????
i have got v2.0 and i downloaded the downgrader but when i opened the folder nothing was in it…
i do not trust this site…
if someone knows what they r doining and can somehow help me i will be happy. but at the moment i am not…
some anti virus will detect file as trojan. If you disable anti-virus.It should be fine
i have a psp 2.01 firmware what can i do to run homebrew or anything else im new to all this and whats the best memory to have at the moment thanks
[Comment ID #678 Will Be Quoted Here]
**Please Note – I have the Japan Version of the PSP which uses circle to proceed instead of cross**
OK – I had the same problem, ie blank screen on the updater when going form F1.5 – F2.0
When on each blank screen as they appear press down on the directional pad a few times (5-10) and then press right on the directional pad, on the 4th blank screen you should then get a scroll bar – press down on the directional pad until you get to the bottom. Then press *RIGHT* again then circle. You will then see the install bar – still with no text. Once it has completed their will be another blank screen, hit circle – your psp will restart with a blue screen telling you it needs to restart and apply default settings.
Once it restarts go to thru the setup and your done – BACK TO F2.0.
hotprawn [AT] gmail.com
Is it possible to downgrade if ur psp is version 2.01
and some1 said that a 1gb card is the best card to have because if the is anymore memory ur psp will not be able to handle it and it will lag?
This WORKED !!!!!
Thanks so much Trevor !!!!
[Comment ID #629 Will Be Quoted Here]
my computer wont let me put overflow.tif in my psp PHOTO how did u?
it says the overflow picture is corrupt
i have v2,60 does this mean i cant do it
thanks in advance
i downloaded the 2.0 downgrade to 1.5 and followed everything. however when trying to update to 1.5 in the game menu, a message pops up saying you have version 2.0, no need to upgrade.. what do i do..?
How to downgrade Psp version 2.01 to 1.5????
[Comment ID #800 Will Be Quoted Here]
worked for me too! THANKS!
SEE kvega2’s Comment (February 28, 2006 6:09 am)
worked for me too! THANKS!
TO EASE THINGS UP JUST DO THE SYSTEM RESTORE
FEATURE IN YOUR PSP AND YOUR TEXT APPEARS AGAIN
please for 2.01 i’m stuck with it, can’t downgrade it,who can help please do it, I really need to get it to Version 1.50…..
I FOLOW ALL THE DIRECTIONS THEN IT SAYS NO NEED TO UPDATE WHAT AM I DOING WRONG?
The degrader indeed works
Can anyone help me? a have a 2.1version,how can downgrade it??Thanks
as anybody else come across this one, i downgrade my psp from 2.0 to 1.5, formatted my memory card it then when back to 2.0, and now i can get as far as the overflow tif file but when i diconnect form pc the psp says on image in the photo file on the psp so it will not start the downgrade, can somebody help!!!
Can I run a game from the memory card without downgrading to the 1.5 version???
1. No downgrader for psp other than version 2.00
2. No iso game can be run on firmware ver over 1.50 but currently you can run homebrews on psp 2.00-2.6(Homebrew not iso)
this is bling bling
Is there a Difference in 2.01 and 2.0 for the psp?
I’ve followed the instructions on this site. But when i try to open the overflow.tiff. Nothing happens, I only get a black screen and nothing. After 30sec I shut down the psp and 10sec later. Put it on again. Then I go to the Game menu. And get the message file is corrupted. How can I solve this? (Im downgrading from 2.0 to 1.5)