No legitimate "never fail" cheat exists for Guitar Hero II. The game does not include a built-in cheat for auto-pass / no-fail.
| Method | Platform | How | Risk |
|---|---|---|---|
| Performance Mode / No Fail Mod | PC (Clone Hero) | Play GH2 charts in Clone Hero → Settings → Gameplay → No Fail / Performance Mode | None (fan game, legal if you own songs) |
| GameShark / Action Replay (PS2) | PS2 | Codes: 2038A1F0 00000000 (Infinite Rock Meter) – unverified, may crash |
Save corruption, disc read errors |
| Xploder / Cheat Disc | PS2 | Pre-loaded cheat database; select "Infinite Rock Meter" | Same |
| Practice Mode | All | In-game: Pause → Practice → Select section → No fail, slow down, loop | None – intended feature |
| GHTCP (Guitar Hero Training Pack) | PC (GH3 PC) | Tool to import GH2 charts → practice with no fail | Requires GH3 PC + GH2 disc |
Cheating the fail condition teaches nothing. Practice Mode is the developer's intended "no fail" – use it.