I have been jailbreaking my idevices for several years now. All of which were second hand and out of warranty(also not $600), so I didn't care But, my iPad has been having overheating issues. I have already been to apple and they told me if it happens any more they will replace it. So...if I jailbreak my iPad and it starts overheating again. Will apple be able to know I jailbroke it, even if I do a clean restore before taking it in. I ask because I know apple has access to a lot of info the consumer does not. Like the internal thermometer via apples behavior scan software. So maybe they can track to number of firmware installs as well as the nature of said install.