It should be noted that this update doesn’t have any new content but rather fixes multiple bugs that were in Mario & Luigi Brothership that hadn’t been resolved yet. As noted by ComicBook.com ...

Mario & Luigi: Brothership's first update fixes major bugs like wrong boss battle locations and soft-locking issues. The RPG features signature Mario elements and new features, and has sold close ...

this infamous bug will cause the arcade game to... Created by Shigeru Miyamoto while he was developing Donkey Kong (which, incidentally, was supposed to be a game based on Popeye), Mario was first ...

Following its release in November last year, Mario & Luigi: Brothership for the Switch has now received its very first update. This bumps the game up to Version 1.0.1 and addresses multiple bugs ...