This is a tool to run homebrew EBOOT programs on your v2.0 PSP. It will not run on any other firmware version. It’s very much work in progress, but can load quite a lot of existing EBOOTs. Changes:

Implement simple internal memory manager, hooked onto firmware memory management, to boost memory pool available to applications.

Hook thread allocation and exit, to allow for clean return to the loader from applications that support an Exit option.

Improve code signature algorithm to distinguish between similar EBOOTs (fixes mis-identification of Casino Addict as SMS emulator).

Added overclocking option : use left and right trigger buttons when choosing file to change CPU speed.

Add NID resolution for Sircs function : enables PSP IR Remote function.

Add USB stubs to user-mode LUA, and better debug info in case of script errors.

Added left and right DPAD support in file-chooser, to go to the start and end of the list

Now supports more than 20 files in a directory

Found pathname hack to run PSP Rhythm Composer.

Improved cache flushing, should improve reliability

Added safeguard to prevent PSPSet from being run and bricking 2.0.

http://www.fanjita.org/psp.html