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Downgrade

Qudlaty

Qudlaty

New Member
Hi
I just wanted to know if there is any way to downgrade the CFW from 3.90 M33 to 3.40 OE. I know it's stupid, but I have got loads of things that only work on 3.40 OE.
Thanks, Qudlaty
 
Go back to 1.5 official or CF?
 
Official. There is not cfw 1.50, but there is patches.
 
How should I do it? When i try to do it from Game, it says that there is no need to update. When i do it from the recovery menu I get an Error 80010002. Please help me.
 
You cannot downgrade to 1.5 on a PSP Slim, the only option is Pandora Battery.
 
I've got a PSP Phat. Is there any way to do it without pandora?

P.s.
It's not bricked. Can I make a JigKick without opening the battery?
 
On any Firmware greater than 3.71 you need pandora. No other way.

As you are on CFW already, making a Pandora is very easy.

Use This to make a MMS and Pandora and then D/g back to 1.50.

Easy.

Phat Batteries are fine to be pandora'd - Some Slim Batteries cannot be turned to Service Mode
 
I used HellCat's pandora creator and successfully downgraded to 1.50 Now I'm installing 3.40 OE. Thanks for your help everyone.
 
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