Ensure the file is renamed exactly to baserom.us.z64 .
– Did you mean something like:
This naming convention is the standard for building and compiling recompilations of N64 titles. It serves as the foundation for the process, with tools depending on this specific filename to locate the essential game data. baseromusz64 link
: This usually means the file is in the wrong folder or has the wrong name. Ensure it is in the main project folder and not a subfolder like /src unless specified. Ensure the file is renamed exactly to baserom