I go to setting and tap NFC and just stays on the settings screen. Booted phone no joy.
You might have to do a hard reset; resetting to factory defaults.
Chiming in late, but have you tried the Windows Phone Recovery Tool, yet? I did that with my Icon last week just for kicks and I'm glad I did. Latest firmware and OS all in one swoop without update on top of update. Noticed a few differences and some things that run even better now. Can't wait for Windows 10!