Hacking Signed Downgrader ?

[stylow]

So i think everybody knows that you can sign homebrew on the psp.
But what about a downgrader is that possible

 

[Jolan]

What do you mean, a downgrader?
6.20 tn-b can run older PSP updates, and Hellcat's Recovery Flasher can flash any sort of firmware, but neither of those are downgraders.

 

[thedicemaster]

it's semi possible.
but first someone would have to build a reliable downgrader, with a built-in kernel exploit to gain kernel access(which unlike with a HEN isn't granted with current signing methods!)

 

[stylow]

it's semi possible.
but first someone would have to build a reliable downgrader, with a built-in kernel exploit to gain kernel access(which unlike with a HEN isn't granted with current signing methods!)

Thanks for the answer

 

[Rydian]

The problem is not the downgrading program being signed... I mean we can run them through HEN and such.

The problem is a lot more complex.
http://gbatemp.net/t268289-psp-hacking-modding-f-a-q
"Q - Why are some 2000 and all 3000/Go models incompatible with pandora and stuck on semi? What's actually stopping them from using pandora or downgrading?"