Need to update without losing jailbreak?

I have ios 7.0.1 right now on my jailbroken iphone 5, and I'm unable to make facetime calls due to my old firmware. Does anyone know anything I can do, whether it be an app, or just any way to update without losing the jailbreak? I have a lot of time put in and customization that I do not want to give up, but I would very much like to facetime my friends.

Once you jailbreak something you can't update or you WILL loose it. Try updating then jailbreaking it again with newest upadate