Ensure the Title ID of your base NSP matches the Title ID of the update file. For example, an American (USA) update file will not work on a European (EUR) base game NSP. Check your installer to verify that the update version is actively registered. Issue 3: Corrupted Data Detected
Deltarune Chapters 1 & 2 (Originally launched as a free demo package) deltarune chapter 1 2 switch nsp update work
Title ID mismatch between Chapter 1&2 Demo and Full Releases Ensure the Title ID of your base NSP
Delete the game completely from the Switch Data Management settings. Reformat your MicroSD card to FAT32 if you haven't already, and reinstall the files using DBI's MTP mode, which safely handles large file splits automatically. Playing Deltarune on Emulators (Yuzu / Ryujinx) Issue 3: Corrupted Data Detected Deltarune Chapters 1
While still in the installer interface, locate your Deltarune update file (NSP or compressed NSZ format) on your PC.