Nintendo 64 Key Codes Page
Welcome to the FAQ on Nintendo 64 Key Codes.
1) First Off:
Nintendo changed up some of the cartridges out there to use different mechanisms on booting up.
2) Second:
All different versions of Cheat Devices require different key codes for each of the sets of games.
3) Finally:
You must refer to your Cheat Device's manual on how to change the devices key code.