Wow, you guys are just beating on him.

Well, there is no way to downgrade a PSP with firmware 2.01 or higher. But luckily, 2.01, 2.50 (), and 2.60 users can still play homebrew through the popular GTA Exploit.

In case you haven't heard about it just yet, it was an exploit which was first discovered by EdisonCarter, which he used to make the CheatDevice for Grand Theft Auto: Liberty City Stories. Soon enough, everyone began to build off of this exploit to get where we are today. A limited, but still large amount of homebrew can be played through this exploit.

That's it.