The psp's can run homebrew software if your either version 1.0 which was only sold in japan or if you have version 1.5 and never updated it. thats how I ve been doing that for months, for further info and my charger wallpapers go to psp-hacks.com. I made thesethreebackgrounds , what do you think?
Also the us version 2.0 should be out anytime and while you cant run homebrew on it it does some neat stuff.
Yep, no flash support. But I can live with that. I can't think of any site I visit regular with Flash features. And, as you said, the US update is coming, which from what I'm reading will just go over the Jspec one. Who knows what features it'll have.