I am new to the iPhone and was wondering if anyone could let me know if it is possible for me to downgrade to iOS 4.0.1. My phone currently runs 4.0.1 and I have been thinking of updating to iOS 4.1. I do have a slight proximity issue and would like to try the latest update. However, after reading up it seems that some people have not resolved this issue by upgrading. I want to see if I will be lucky with the update. Does anyone know if I can downgrade if it doesn't work out for me? I do not want to jailbreak my phone, if this helps. Also, I have a factory unlocked phone so I have no worries about the unlock option.