I've had a refurbished iPad for a few weeks and want to start developing for it. However, I'm still learning how to code for the iPad but need to test features such as "music loading", which can't be done on the simulator (AFAIK). I don't mind paying the $99 fee when my app is ready, but can I jailbreak my iPad temporarily whilst I'm learning? I then want to unjailbreak it, pay the fee and continue as normal. I would pay $99 now, but I don't want to waste a month or so of my 1 year license in learning. Since it's refurbished, the warranty is quite important. Can I safely unjailbreak and enroll in the dev program without Apple knowing or could there be traces even after a factory reset? I don't plan on installing any apps other than my own side-loaded ones for testing and ones from the official App Store. Thanks!