Will IOS 7 work with Gevey sim?

I can't take it anymore I have an iPhone 4 running IOS 4.1 Jailbroken and has a Gevey sim. So I wanna update to IOS 7 but i'm scared that my Gevey sim will brake. Will it work?

Go ahead.

It will, your carrier has nothing to do with it. But you either need to remove the jailbreak, there's programs to do that, or wait until a jailbreak for iOS 7 is released. If you update now it could brick your phone. Which is basically turning your phone useless, as in it will not work.