What it does :

- Downgrade your PSP to 1.50

[Only Registered users can see links . Click Here To Register...]

Directions

- Download the RAR file and extract it.

- Put your USB in your PC and PSP

- Send the file to PSP/GAME folder

- Then exit from USB Mode and go to GAME and click on UPDATE.

- After, press X to continue DOWNGRADING (DONT CLOSE YOUR PSP)

- A Big OK will be on the screen and then click X to restart your PSP (Dont close or it will Brick)

- Go to System Settings and check your version, if its 1.50 its successful.

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thanks for the help i hope this works

the psp says that the data is corrupted

my psp says data is corrupted. please help. does it mabey only work on a phat psp instead of slim which is what i have?

Will this downgrade OFW 5.51? tnx!

says its corrupt

It keeps saying it's corrupt... what should I do? Any idea?

i tried using this downgrader on my psp and i couldnt because it said the file was corrupted

STEANER! PLZ PLZ PLZ HEEEEeEEELP! i did that and im on the big ok and im stuck cuz x wont restart and r trigger wont do anything plz help!

I have the same problem right now... Never had this problem before...