If the game is truly DSi exclusive (e.g., System Flaw or Photo Dojo ), this will not work. You must keep DSi mode ON and fix the ROM.
Modifying a game (e.g., using the Universal Pokemon Randomizer ) often "scrubs" these binaries, as the patching process frequently breaks DSi compatibility. The Dsi Binaries Are Missing Please Obtain A Clean Rom
, where specific code required for DSi features is missing from the file. What are DSi Binaries? If the game is truly DSi exclusive (e
Games like Pokémon Black/White contain extra code for the DSi’s camera and faster processor. System Flaw or Photo Dojo )
Once trimmed, the DSi binaries are irrecoverable unless you have a backup. And since the DSi signature check is cryptographic, you cannot simply "re-add" the missing data from another source. You must start over with a clean ROM.