The PSP modchip Undiluted Platinum is available to pre-order should you wish to. You can either buy it or get it installed professionally.
UK
Features/spec and buy to install yourself - http://www.modchip-store.co.uk/UndilutedPlatinum-Psp-Modchip-p-226.html.
Professional installation including modchip - http://www.modchip-store.co.uk/Psp-Installation-Service-p-229.html
US
Features/spec and buy to install yourself - http://www.modchipstore.com/Undiluted-Platinum-PSP-Mod-Chip-Fix-Bricked-PSP-with-full-featur-16328.html
Professional installation including modchip - http://www.modchipstore.com/Sony-psp-professional-mod-chip-installation-service-install-modc-16331.html
As discussed previously, this modchip allows users to pretty much run anything they want, including ISOS. This obviously isn't a good thing and we all have to hope it doesn't result in a loss of game sales. However, it can also be used for running all homebrew on a 2.71+ machine which is the reason I will be getting one and I hope it's the reason you will be buying one too.