Hi guys, I bought a brand new (factory sealed still) iPhone 4 on eBay today. Because it is sealed still, the seller does not know if the fw is 4.0.1 or 4.0.2. As I am planning on using the phone with my T-Mobile sim, I'm starting to worry that if it is 4.0.2, I will be stuck... I know 4.1 is coming next week, and surely the dev team will jailbreak it, but how would I go about jailbreaking my phone? I was thinking of activating it with a phonebook sim, upgrading to 4.1 upon its release, then use the 4.1 jailbreak (upon its release). But I'm also hearing that 4.1 won't work with the phonebook sim trick... so what could I do in that case? Any thoughts?