Sorry if this is a reall noob question or has been asked before - I have searched these forums but not found a definitive answer. I bought a iPhone 3GS off eBay and it was jailbroken and unlocked to 3.0. I have no idea which method was used to carry out these processes. I require it unlocked as I use the Orange network in the UK. I would now like to upgrade to 3.1.2 but also be able to jailbreak and unlock the phone again afterwards. I know the jailbreak part is easy through blackra1n but have read conflicting reports about the unlocking side. Can someone let me know if both can be done and if there is a knock-on effect for future jailbreaks and unlocks?