Xbox 360 FAQ
Can you mod an Xbox 360 without voiding warranty?
You aren't going to like the answer to this question, the fact is that there is no way to mod an Xbox 360 without voiding
a warranty. There have been many that claim to find ways, but it usually ends up requiring you to fraud your way out of it.
Other options
One alternative is to buy a custom Xbox 360 console from a company that offers their own warranties. Typically the warranty offered will not be as long but it does give you peice of mind. Here is a pro-tip for you. NEVER buy something from a company that claims they can mod your Xbox 360 console without voiding the warranty. It is a scam and it will always be a scam.