As attempts to downgrade from the seemingly unhackable firmware versions 1.51-2.0 become more and more desparate, the possibility of homebrew on any version past 1.5 is becoming increasingly unlikely. With the cool feaures of 2.0 and the forced updates included on newer games, this has created considerable strife among many members of the homebrew scene. Most alternatives to updating involve possible risks, and many others are hoaxes whose main intent is to brick your psp. With seemingly hundreds of new threads inspiring false hopes of a working downgrade method in the past few days, it's time to think of an alternative.
What I'm about to suggest may imply a bit of piracy involving the encryption of the firmware's security, but given the choice between piracy and bricking my psp, the choice seems obvious.
I have come to realize that PSP ISOs can be dismanteled and re-arranged to obtain certain results, such as removing forced updates from newer games. If this can be done with a UMD, can it be done with a downloaded demo?
Playstation.Spot is a promotional Sony booth that allows wifi downloads of official playable content to a PSP memory stick, which I am assuming, given the design of the crossbar menu, launches from the same section that we have been using for emulation. These demos can obviously run on 2.0 psps because they are sony content, and contain the signature that allows them to bypass the security check. It is my theory that there might be a way to dismantle the demo, much like an ISO of a UMD, and re-use the contents in order to create some kind of homebrew loader, possibly using the reconstructed eboot to launch PSIX or some kind of secondary operating system with rules similar to version 1.0, allowing homebrew within its confines.
I posted this theory in speculation rather than psp hacks because it is just that, a theory. I don't want to get anyone's hopes up because frankly, I'm no programmer. I would have attempted to articulate my point better, but I'm in a hurry, and this is the second time I've written this, the first being interrupted without completion. I appreciate the feedback, positive or negative.