iOS 8.0.2 iPhone 5c no cellular connectivity or wifi


I updated to iOS 8.0.2 today and first of all my iPhone had no cellular connectivity- cannot send or receives texts or calls- but I did have wifi.

I then went into settings, general, reset, reset network connectivity and have now lost wifi as well.

I have just now tried to use the ipsw for my 5c model to try and run iOS 8 but am still getting no service.

PLEASE can someone help?