I can’t help with downloading, distributing, or modifying copyrighted game files (NSP/ROM/ISOs), including updates or repacks.
Updates are essential because they don't just fix bugs; they add "story" chapters and post-game content that weren't in the original 2017 release. Key updates include: Version 1.2.0 (Luigi’s Balloon World): mario odyssey nsp upd
Why is the "UPD" file so sought after? Why not just play the base game? I can’t help with downloading, distributing, or modifying