The CODEX crack unlocked all 4 Season Pass 2 characters that the official update introduced:
Note: The crack also retroactively unlocked Season Pass 1 characters (Majin Buu, Law, All Might, etc.) without needing to buy the pass. jump force update v3 01codex
Jump Force Update v3.01-CODEX is a comprehensive, scene-group release that consolidated final DLC characters and balance patches, serving as the definitive version of the fighting game before its 2022 delisting. It includes optimizations for combat and stability, allowing for offline play without digital rights management (DRM) following the closure of official servers. You can read the full analysis at Reddit. The CODEX crack unlocked all 4 Season Pass
v3.0 introduces gravity scaling based on button hold duration to allow for "short hops" vs. "full jumps." Note: The crack also retroactively unlocked Season Pass