5.1. Title ID Management Nintendo assigns a unique Title ID to every piece of software. If the developer changes the architecture significantly, they may issue a "new" application, rendering the old update channel dead. In Deltarune's case, the update mechanism had to ensure that users who downloaded Chapter 1 for free could update to the bundle without re-purchasing, requiring specific entitlement checks on the Nintendo server side.
5.2. Save Data Persistence
A critical aspect of the update's functionality was ensuring that save.dat files created in Chapter 1 were correctly recognized by the Chapter 1 & 2 executable. This required the update to maintain the same unique user ID association and file pathing structure, despite the internal game code changing to support a chapter select screen. deltarune chapter 1 2 switch nsp update work
| Issue | Solution |
| :--- | :--- |
| Atmosphere crashes on launch | Delete 0100DCD01C2A8000 folder from /atmosphere/contents/ (removes bad cheats/mods). |
| Error 2002-0001 (corrupt NAND) | Your SD card is fake or dying. Test with h2testw. Reformat to FAT32 (not exFAT). |
| Update fails to install (Invalid NCA) | Redownload the Update NSP from a different source. The file header is damaged. |
| Game asks for Nintendo Account | Use Tinfoil > Options > "Link Account" or run Linkalho homebrew. | In Deltarune's case, the update mechanism had to
Yes, properly sourced and installed updates for Deltarune Chapters 1 & 2 work flawlessly on the Nintendo Switch (both on standard firmware and custom firmware like Atmosphere). This required the update to maintain the same
However, success depends on three key factors: