Software Update Check Failed. On the Configuration Manager console go to Administration Site Configuration Servers and Site System Roles and then click in the right pane. Check for updates after restarting the computer.
For more information see Determine the port settings used by WSUS and the software update point. Check for updates after restarting the computer. Who knows we may never get any updates via the app depending on LGs agreement with T-Mobile.
Check the port settings configured for the software update point and verify that they are the same as the port settings configured for the website used by WSUS running on the software update point.
Connecting to the update service. If it fails test the installation as the logged on user with the same installation switches to understand if this is an issue with installing under local system. Manually update using IPSW Firmware. For those you have to go to the Microsoft Update Catalog search using the KB number of the failed update and download the correct standalone distribution package then double-click to run it.