While you're waiting for our Tokyo Game Show coverage to start, here's a bit of absolutely fantastic news for you to chew on. A new version of Fanjita and Ditlew's eLoader has come out today, and it now supports 2.70 and 2.71. What's an eLoader you ask? It's the application you need in order to run homebrew on your PSP. With this new eLoader, an even larger audience of PSP fans can enjoy homebrew without having to downgrade.
Check it out at DCEmu.
No GTA or downgrading needed to run homebrew