I have an iPhone 4 Jailbroken on 4.0.1. All shsh files saved locally up to 4.1 with umbrella. Is there any advantage to keeping my baseband 1.59.00 w/ umbrella when upgrading to 4.1 and going w/ the new greenpois0n JB? Or do I let the baseband update automatically w/ 4.1 upgrade. I have a contract w/ AT&T and have no plans to unlock. But I might sell the phone in the future. Does it matter at this point w/ no unlock anyway? Any higher resale value w/ older baseband? Thanks for any answers.