Higher success rates with homebrew and older "ISO" or "CSO" game files.

While there is no official Sega-released version of Jet Set Radio specifically for the PlayStation Portable (PSP), the community's demand for mobile "Tokyo-to" action has led to several workarounds, updated fan-modified files, and emulation methods. The "Updated" PSP Experience

If you are looking for the most updated ways to play the series beyond the legacy PSP: