Teltonika offline for 40 hours and randomly comes back online without any logs

[VDW]

Hello,

This weekend one of our RUT955 went offline for 40 hours and all of a sudden came back online today.
The logs from the webui show no events (last event from 20/7 at 19:42) and me logging in through the webui.
In the CLI logs (logread), I can see the last log from 20/7 19:42 being a search for updates and today saying Connection error to FOTA server.

Sat Jul 20 19:42:05 2024 daemon.info procd: - init complete -
Sat Jul 20 19:42:05 2024 daemon.info dfota[5515]: Searching for WAN…
Sat Jul 20 19:42:05 2024 daemon.info dfota[5515]: WAN found on interface: mob1s1a1_4
Sat Jul 20 19:42:06 2024 daemon.info dfota[5515]: Preparing for gsm.modem0 update!
Sat Jul 20 19:42:06 2024 daemon.info dfota[5515]: Searching for updates…
Mon Jul 22 13:34:12 2024 daemon.info dfota[5515]: Connection error to FOTA server! ErrorCode: 169
Mon Jul 22 13:34:12 2024 daemon.info dfota[5515]: No update found!
Mon Jul 22 13:34:17 2024 cron.err crond[6718]: crond (busybox 1.34.1) started, log level 5
Mon Jul 22 13:34:17 2024 daemon.info dfota[5515]: Update script done!

The device uptime was 59 minutes when I checked around 14:30. So the device had to have rebooted or got stuck somewhere?

[Marija]

Hello,

Is there a chance that there was a power loss during this period?

Did this occur randomly, or was something done to the router before it happened? For example, were any new configuration changes applied or any other adjustments made?

Best Regards,