My iPhone 4s's wi fi is not available after ios 7.1 update

I updated my iPhone 4s from 7.0.4 to 7.1 and the next morning my wifi had stopped working. It's usually greyed out and is completely unavailable. I tried restarting a couple times. One time it wasnt greyed our and let me connect to my wifi (typed in the password and everything). But as soon as I tried to load anything or refresh anything it just sat there loading until it would say connection not available. It's now greyed out again. Does anyone know if there going to be working on another update that may fix this. Or has this update fried the actual wifi chip inside my phone.

Sorry, chip or a weak solder connection has fried .  This has happened rarely after every update since 1.0.1, and with every iPhone model.  The update is stressful on the phone when burning the firmware and marginally functioning components may fail.  Try the steps described in the support article below, but it's likely that you'll have to replace the phone.
iOS: Wi-Fi settings grayed out or dim
Do NOT try the "freezer" or "hairdryer" methods you may see. At best they're a temporary fix and likely to do further damage to the phone.

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