Default [Q] Upgraded HTC One Wouldn't Connect to the Internet

Just upgraded my HTC One (developer edition) to the Android 4.4 package. As soon as I did, the device stopped connecting to the Internet. It sees my home network, it confirms "excellent signals" -- yet it tells me it is "out of range". Never happened before.

Tried rebooting both device and modem, to no avail.

When I try to connect manually, system tells me "Saved, secured with WPA".

Anyone out there having a similar experience?