Modders have rebuilt levels and optimized polygon counts specifically for the PSP's hardware constraints, maintaining the aesthetic while drastically boosting performance.
The Underground Evolution: How the Jet Set Radio PSP Rom Was Updated for the Modern Era jet set radio psp rom updated
Assuming you have a Custom Firmware (CFW) PSP (like PRO-C or LME), here is the safest method to install the Jet Set Radio experience using the Dreamcast emulator method (for the original full campaign). Modders have rebuilt levels and optimized polygon counts
You can play the Jet Set Radio GBA port using the gpSP emulator. While this version uses an isometric perspective rather than 3D, it is the most stable "native-feeling" way to play on original PSP hardware. jet set radio psp rom updated