Are these things worth it? And do they void the warranty? http://www.amazon.com/XCM-Unlock-Tool-Xbox-360-Slim/dp/B004KEMI66
Yea its worth it, and yea it will void your warranty, it is possible without tools, but its incredibly hard, and you're likely to break something without them.
http://secure.llamma.com/catalog/360-unlock-kit-xbox-360-case-opening-tool-p-740.html the phat tools are just as easy in my option. and are cheaper
no they are not worth it and yes it wil void warranty once you mess with the sticker when you open the case.