I just updated my phone from IOS 7 to IOS 7.0.2 and my gevey still working great! I own an iPhone 4S from Movistar and it's currently working on tmobile's network (US).
Hey
I have a 4s that is locked to vodafone UK and I currently have the Gevey Ultra s 2.02 and it unlocks the phone to Bell Canada on IOS 6.1.3. Can anyone confirm that the gevey will unlock my phone after I update to IOS 7?