In legitimate distribution (eShop), updates often use delta patching algorithms (like xdelta or bsdiff) to minimize download sizes. However, for significant structural changes like adding a whole new chapter, the update often includes raw new files rather than binary diffs of existing ones. The "work" performed by the system involves extracting the new NCAs and updating the content meta keys to recognize the new version ID.
Deltarune , created by Toby Fox, presents a unique challenge in console distribution. Initially, Chapter 1 was released as a free, standalone application. With the release of Chapter 2, the software architecture required a significant overhaul to merge two distinct executables or data structures into a single coherent application. On the Nintendo Switch, software is distributed in the format. Understanding how the Chapter 2 update functioned requires an analysis of how the Switch operating system handles application versioning, filesystem hierarchy, and patch application. deltarune chapter 1 2 switch nsp update work