Some DSi-enhanced games will fall back to standard DS mode. Others—especially DSi-exclusive titles—won't boot at all without their DSi binaries.
Emulation opens up incredible opportunities to revisit classic handheld games, but it also comes with specific technical hurdles. One of the most common and frustrating errors encountered by Nintendo DS and DSi emulation enthusiasts is the message: Some DSi-enhanced games will fall back to standard DS mode
The DSi Binaries Are Missing Please Obtain a Clean Rom Better: A Comprehensive Guide One of the most common and frustrating errors
If you cannot obtain the DSi binaries and simply want to play the game, you can force the emulator to run in instead of DSi Mode. or improperly dumped
The DSi binaries are the specific code snippets required for those enhancements. If a ROM has been "trimmed" (a process used to reduce file size), corrupted, or improperly dumped, these binaries are often stripped away.