I appreciate your help with guiding me to unlock my Iphone 3G: I have a mac running 10.5.5 version and like to unlock my iphone (baseband 2.28 with version 2.2. Can I use QuickPwn or I must use Pwange? Also, understand there is an issue with DFU mode and 10.5.6. Will I need to worry about this if I upgrade later to 10.5.6? Last, will I loose any data currently on my Iphone? Thanks very much for your help.