3.50 downgrader

I know that as of now, if you want to downgrade from 3.50 you must use the Lumines exploit. Has anyone tried decompiling Lumines and taking the way it saves it's game data, and placing that in a incredibly simple game, a game as simple as pressing X? I've heard Lumines versions that are unpatched are becoming rare quickly, so wouldn't this fix that problem for everyone?

It's just an idea, and if it won't work, please tell me why. I'm interested to know.

Thanks.

how are you going to run this homebrew "X" game on your 3.5 psp?