This is the safest and most reliable way to get the game.
What you need:
Step-by-step guide:
If successful, your ROM is now an English patched version. The file size should remain ~128MB. Digimon Story Lost Evolution English Patched Rom Download
Because Bandai Namco never announced a Western localization, fans took matters into their own hands. The project was primarily led by the translation group "Ys=K Team" (later supported by GBA Temp and Romhacking.net contributors). This is the safest and most reliable way to get the game
Once you have your patched ROM, you need hardware or software to run it. Step-by-step guide:
With Digimon Story: Cyber Sleuth and Digimon Survive available on Switch/PC, why go back to a 15-year-old DS game?