http://psp3000hacks.com/
Yes, that moment us PSP-3000 users have been waiting for has arrived. Davee has released chickHEN homebrew enabler for all PSP’s. This give users homebrew on any PSP. Via the TIFF expolit come kernel expolit this is possible, but you must have firmware 5.03 for this to work. It will not work on 5.50 sorry!
*Edit file updated with maibrithahn’s unofficial h.bin bug fix. Homebrew now works on PSP-3000’s! We tested it and it works!
http://davee.x-fusion.co.uk/index.php