I have posted about the Datel Light Blue Tool a few months ago and I have not yet received a positive feedback on its capabilities to run homebrews.
Hopes are dim for running homebrew on the PSP 3000 a few months back but now an exploit has been found negating the need for a Lite Blue Tool. The exploit has been found on the GripShift game save if you rename the save "this is sparta...." with 57 a's in the end. It is now available for download along with the corresponding SDK.