SXT sq Lite2 reset problem

Is there any escape?

I tried a reset but to no avail. WinBox does not see it, the ethernet connection keeps breaking.

It happened after the update.

https://tinyurl.com/4bb3azne

I am not sure to understand, if the device is not seen in Winbox, how did you got the log?

In any case there is still netinstall (though it is often a PITA to have it working).

The SXT is connected to hAP S via eth5 (PoE Out).
I can't access it, RoMON doesn't see it.
It's also not visible when connected directly to a computer. I've tried changing cables, PoE, but to no avail. The Ethernet LED keeps blinking.