Hey, I'm not really sure this is the right place to post this, but I have my iPhone 3G that's pretty much been doing nothing since I got my iPhone 4. It's currently on 4.1, which I plan on jailbreaking and unlocking before selling. My main concern is making sure I remove any trace of my personal info off of it. What's the best way to jailbreak/unlock/remove all my data? Thanks.