Emulators on psp 2.0?

Have anyone been able to get an emulator (or any custom program for that matter) to run on a psp with v2.0 firmware? Judging from the results when searching google it doesn't seem like it, but I figured I could ask you guys.

If not, is it possible to somehow downgrade from 2.0 to 1.50? (I found -one- decent link when searching google on that topic, wab.com, but that page didn't seem to work too well on my computer)

there are people working on psp 2.00 and 1.5x downgrade hacks -- mainly the WAB team whose link you seem to have found. So far, they have managed to exploit the PSP but not do anything useful with it (on non-1.0, non-1.5 systems). Take it from me -- the web browser was so NOT worth the upgrade. Just use a computer. 4chan is NOT needed everywhere.

The exploit should be in testing and out sometime in the next few months, in my opinion (*definitely not official opinion).