Technically, this is possible for advanced users. You can attempt to modify the ROM header or replace the ARM binaries to strip out the DSi code entirely, forcing the game to treat itself as a standard DS game. However, this is an advanced process and is not recommended, as it can lead to instability.
Understanding the "DSI Binaries Are Missing" Error: Causes and Complete Fixes Technically, this is possible for advanced users
the ROM file you are using lacks the necessary data to run in DSi mode Understanding the "DSI Binaries Are Missing" Error: Causes
When an emulator or nds-bootstrap detects that a ROM is designed for DSi but lacks the necessary binaries to operate, it triggers the error message: "The DSi binaries are missing. Please obtain a clean ROM better." . 2. What Does "Obtain a Clean ROM Better" Mean? What Does "Obtain a Clean ROM Better" Mean