If you are looking to "improve" or modify your save file beyond what standard updates provide, players typically use third-party tools:
Addressed the "Depths of Despair" Expert Mission Giant Ki attack bug and various English voice-over issues. Save Game & Data Management Tips dragon ball xenoverse 2 version 102 save game better upd
These files often come pre-loaded with unlocks for the latest Future Saga characters and Parallel Quests (163–174). Save Editor Compatibility: Recent updates to the Xenoverse 2 Save Editor If you are looking to "improve" or modify