Search for the FBNeo DAT file that matches your emulator version (e.g., v1.0.0.3).
When FBNeo says "unknown," it’s telling you: "I see a zip file here, but the data inside doesn't match the specific version I'm programmed to read." Step 1: Matching Versions (The Golden Rule) romset+is+unknown+fbneo+fixed+free
Disclaimer: This guide is for educational and preservation purposes. Ensure you own the physical hardware or license for any software you utilize. Search for the FBNeo DAT file that matches
Check the bottom-left corner when the core is loaded. v1.0.0.3). When FBNeo says "unknown