Click , select all the DLC NSP files, ensure the checkmarks next to them are enabled, and click save. Performance Tuning and Common Troubleshooting
The update version you want is 1.4.1 (v196608) . Some sites offer v1.4.0 which lacks the "xin" (new) playable characters—only v1.4.1 includes Amy, Knuckles, and Tails.
If you are running the game from an NSP file, applying the latest updates (often labeled -UPD-) provides several benefits:
: These are popular homebrew tools for installing NSP files via USB from your PC.
"Exploring the World of Sonic Frontiers: What You Need to Know About the Switch NSP and Upcoming DLC"
The DLC is designed for the end-game. You must have completed most of the main story.
The Final Horizon DLC pushes the Switch hardware to its absolute limit. In handheld mode, the new island runs at a choppy 30 FPS (frequently dropping to 20 FPS) due to the dense foliage and enemy swarms. However, the narrative payoff is excellent. If you have an (like Sys-clk), setting the CPU to 1785MHz and GPU to 921MHz smooths out the experience entirely for this DLC.
: A festive outfit for Sonic to wear while exploring Starfall Islands.
: Up-to-date signature patches matching your current firmware level to allow backup playback.
Do not use cheats from older versions (v1.3.0). They will crash the Final Horizon towers. Use only 1.4.1 specific codes.
An expanded storyline that offers a different perspective on the final act of the game.
Adds a Jukebox mode to change background music, a Photo Mode for snapshots, and new challenge modes (Cyber Space Challenge and Battle Rush). Birthday Bash (Update 2):
