To everyone who is holding out for a PSP port... you may be better off (if you have it) plunking down $30 for an Xbox 360 NAND USB SPI, that is dual purpose, as PSGroove has also been ported to it. It's cheaper than any retail Jailbreak clone, its in stock at DIYGadget (unlike the Teensy or BlackCat), and if you have a 360, or plan on getting a 7363 dashboard system anytime soon, can be used to back up your NAND for it as well. Mine just shipped today.
If he's serious, then I wish him the best of luck. My confidence in a working PSP work is waning quickly, with fakers like DevUltime and such writing checks their A$$es can't cash.