The v1.04 update was a significant quality-of-life patch released by Bandai Namco. Here is what it adds to the experience:
This version saves all data locally. Unlike the official Steam version, which occasionally requires online authentication for DLC ownership, v104codex allows you to play 100% offline. This is a massive advantage for players with unstable internet or those who want to keep modded saves separate from their Steam cloud. dragon ball z kakarot update v104codex
If you are downloading a repack labeled "Dragon Ball Z Kakarot Update v104codex," you are typically getting: The v1