Hi,
if you enable the Network Diagnostics in the configuration of the XT4 (last stable firmware as of july 2022) and boot the device, then the network diagnostics screen will be in front of the usual screen saying that the config is being applied. That would be fine - the problem is though that the "do not turn the device off, please wait, config is being applied" screen does not go away. That is very disturbing because even after letting it run for 2+ hours, it still seems (!) that the config is not established yet. (Of course it is; I rebooted the device afterwards and everything was fine.)
This should be corrected as it displays a very wrong information on the screen.
Pascal