Hey guys, I had some quick questions for anyone who's familiar with jailbreaking... I have a iPhone 3G that's currently running 3.1.3 and is unlocked using ultrasn0w. Is there anyway to update the firmware to 4.0.1 without upgrading the baseband so that it can be unlocked again? Would the iPhone 3G respond better on it's current set-up (i.e. 3.1.3), or on iOS 4.0.1 with fakeclockup installed? At the moment it's fairly responsive, but still laggy. Are there any Cydia tweaks that can help speed up the phone? Thanks for any help!