That's right! All psp firmwares from 1.0-2.80 is hacked! Don't belive me? Check out this!
http://pspupdates.qj.net/ is the web origanally started here is where i read it http://blazebyte.myfreeforum.org/ftopic504.php&highlight=
if u dont know what homebrew is, it is an unsigned code that is...