Fanjita has released the first stable version of his eboot loader that works on 2.0 and 2.5. Currently it doesn’t support a lot of homebrew software, but it should very soon.

To install follow these instructions

Use WinRAR to unpack the contents of this package into the root (topmost) folder on your memory stick. Note that if
you have an existing GTA savegame that uses slot 5, then this will be overwritten by the eLoader savegame.
You can see which slots you are using by the folder names - ULES00182SX, ULES00151SX or ULUS10041SX : X is the slot number.

To download head over to PSP-Spot’s download section or click here.

Via PSP-Spot

(For the moment Fanjita.org seems to be offline, when it returns I will put the link to his loader’s page)