Downgrade 3.71M33 to 1.50 without pandora

**banner362** · October 2nd, 2007, 20:47

SOMEONE HELP MEE!!!!…..i installed 3.71M33 on my fat psp, and it worked fine. And then i installed the 1.50 kernel thing, and it worked fine. But after, like and idiot, i tried insalling a theme with slash n flash. And now my psp is messed up. SOMEONE HELP!!!!

**banner362** · October 2nd, 2007, 20:48

I only made a backup of my flash before i installed the 1.50 kernel thing. So im guessing i need a backup flash of a psp with 3.71m33 AND 1.50 kernel. PLZ REPLY!!! I CANT USE MY PSP

**Saracchini** · October 2nd, 2007, 21:27

You have an Pandora battery or access Recovery Menu ?
If you have why you dont reinstall 1.50 then 3.52 M33 and after 3.71 M33 +add-on ?
Or if you have a backuped nand of your PSP when it was 3.71 M33 just reflash it and install 1.50 add-on again.
Flashing the nand of another PSP can give you serious problems .

**Ratatella** · October 3rd, 2007, 13:54

Originally Posted by banner362

SOMEONE HELP MEE!!!!…..i installed 3.71M33 on my fat psp, and it worked fine. And then i installed the 1.50 kernel thing, and it worked fine. But after, like and idiot, i tried insalling a theme with slash n flash. And now my psp is messed up. SOMEONE HELP!!!!

Hey banner362,

I had exactly the same problem as you and found a trick to fix it.

download this AND READ the readme I wrote myself.

http://www.megaupload.com/?d=PZSCNT8S

that should downgrade your psp back to 1.50. From there you can go to a CFW again.

goodluck.

Ratatella [ psp FAT ]

- Down-/Upgraded: 5 (FAT) / 0 (SLIM)
- Bricked others: 0
- Bricked my own: 2wice
- Unbricked my own: 2wice

currently back from 3.52 M33-4 -> 3.71 M33 -> Brick -> 1.50 -> 3.52 M33-4 ->

( I like the original "applecor" theme allthough it bricked my psp @ 3.71 M33)

**schwamman100** · October 4th, 2007, 23:51

I am not able to get this to work. What file do i need to change the name of or do I need to download the 1.5 FW and add that in there to make it work.

**SpooForBrains** · October 5th, 2007, 00:18

Originally Posted by schwamman100

I am not able to get this to work. What file do i need to change the name of or do I need to download the 1.5 FW and add that in there to make it work.

yes, you need to download the 1.5 firmware eboot, name it 150.PBP and put it in the root of the memory stick.