I know there is NO known unlock for 4.1 for iPhone 4 I am at 4.0.1 unlocked through Jailbreakme.com and unlocked through ultrasn0w. Now if I update to 4.1, and jailbreak there is no known unlock for 4.1, probs have to wait to 4.2. But why do people say you MUST jailbreak using QuickPWN to maintain my baseband? Can I jailbreak using Greenp0ison now, and unlock it when the unlock is available for the baseband or is there a specific way to do so. Thank you!