Firmware update problem

Hello,

I can not update my utrack24.

I have tried to update it via USB drive ,but the update does not start at all.
I also tried using the internet connection.
My Mac just won’t find the utrack within the network.
The device is connected via ethernet cable and my mac is in the same network via WLAN
The firmware’s pretty old. Its 1779 and I have not found any way to update the system

The purchase was made in April 2017.

Please help!.

Cheers
Tobi