If you need to convert save formats (e.g., from a .max file to a folder), these tools are the industry standard:

The AI in Ougon Sedai no Chousen is brutally punishing. Without a perfect shot gauge or leveled-up stats, matches against Toho Academy or Hamburg SV become unwinnable for casual players. A maxed-out save file (all stats 99, all hidden skills) turns the game into a “cinematic mode” for fans who just want to relive the anime.

and All-Stars are unlocked by completing the initial segments and the entirety of the primary Story Mode, respectively.

A complete save file for the PS2 version generally includes: Unlocked Secret Teams : Access to all major national and club teams such as Argentina Jr. France Jr. Germany Jr. All-Star Mode & Edit