I found this on usenext earlier that looks interesting. Im reckoning its to do with the exploit that has already been found for the current 2.5 downgrader project, but im not sure. The name of the zip/rar folder is "psp 2.5hack" all it contains are 2 very short video clips, and an eboot. Ive scanned the eboot and it is clean. I'm not sure how to test the eboot though, as its on its own, can anyone try it out for me and see if its anything usefull?

You can download the file from:

http://rapidshare.de/files/7655951/psp2.5hack.rar.html