Join communities like or CDRomance . Search for "Jet Set Radio Revisited Patch." This is the most popular "updated" mod for PSP play. It includes:

Because no official version exists, the keyword becomes critical. It usually refers to the ongoing community effort to optimize the original game for portable hardware via emulation patches.

For those looking to fix specific technical hurdles in the original code, community members have even found ways to fix save/load bugs that previously plagued ROM stability. optimize the settings for your specific handheld device?