Have you tried the latest UPD? Let us know in the comments below if you got it running on a Street model!
This method allows users to "play" the full PC version of San Andreas on their PSP by streaming the video and controls from a PC over a USB cable, achieving roughly 30 FPS at native PSP resolution ( Performance Optimizations (via PPSSPP)
However, there are two major files circulating under the label that are legitimate:

