Hello,
I have one TRB 245, where it was working for several days until I lost connection. After a quick troubleshoot I notice that the Eth port does not show any activity by looking at the LEDs and in the computer it detects but does not show any Rx packets, and also the 3 radio connection LEDs are blinking. I tried several Reboots and the issue remains.
I removed the SIM card and I tried with another power supply and that does not solve the issue.