Step one: Open your GAMECIH
Step two: Open Tap Tap Revenge 4
Step three: Pick a song(preferably an easy expert one)
Step four: play until you get 5000-15000 (easier)
Step five: open your GameCIH go to input number and input your score. If 3 values show up change all to 100,000,000 if not repeat step.
Step six: Close GAMECIH and tap a note. MUST HIT A NOTE! Wont work if didnt
Step seven: BOOM! Should have 100,000,000 on score now play till the end and you'll receive a ton of coins and will +1 level! If you didn't receive 100,000,000 try lowering it by half. You'll still level and get coins.
This also works in challenges ( haven't tested online)