Expect the final major update in early 2025 to reflect the new Champions League format (36 teams) and the expanded Club World Cup. After that, patches will likely become "legacy editions" released every two years.
Watch this gameplay of the classic 2002 edition running on modern handheld hardware: pes 2002 psp upd
To run patched ISOs or updates, your PSP usually needs Custom Firmware (CFW) like 6.60 PRO-C. Expect the final major update in early 2025
A common source of confusion is mixing up PES 2002 with (often titled Pro Evolution Soccer 2007 on some platforms), which was a flagship title for the PSP. pes 2002 psp upd