"Guitar Hero On Tour" Game Code? Clarify What You Need

There is no single universal "game code" for Guitar Hero On Tour (DS, 2008). Specify:

• Cheat Codes? Entered in‑game: Options → Cheats. Unlock all songs: Up, Up, Down, Down, Left, Right, Left, Right, B, A, Start (Konami) — may vary by region.
• Product Code / SKU? Nintendo DS: 045496737784 (US), 045496737791 (EU).
• Serial Number? On cartridge label (e.g., NTR‑YGHE‑USA).
• Friend Code? Generated per save file for DS Wi‑Fi (WFC dead; use Wiimmfi + altWFC).

Tell me the exact purpose (unlock, identify, trade, online) and I'll give the exact string.