If cheat codes or mods do not apply, your Build ID likely does not match the text file name. Check the emulator's log file or game properties window to find your exact version string, and rename your cheat file to match that specific hex code. To help find the exact files or codes you need, tell me:
Nintendo bans consoles that connect to official servers with modified saves. If you see -1.... on a hacked Switch, go online in Fire Emblem: Three Houses . The anomaly suggests file corruption that could trigger telemetry flags. Fire Emblem Three Houses -010055D009F78000- -1....
Encountering the number isn't a cause for panic; it’s just the game's Title ID. The real issue—save corruption—is frustrating but almost always fixable. Start with the autosave, keep your system updated, maintain multiple manual saves, and always back up your data if you're delving into mods. If cheat codes or mods do not apply,
Never rely on just one save file. Use at least 2–3 rotating manual save slots. Before major story battles or paralogues, save in a new slot. If you see -1
If you are looking for modification data, the Build ID for version 1.2.0 is often needed to apply cheats or patches via Atmosphere/EdiZon: