After many weeks of stable operation I got an alert that my backup LTE internet connection on my SXTR LTE6 was down.
Logging into the RouterOS the LTE interface was greyed out and showing status ‘invalid’.
Rebooting the device restored the connection immediately.
Is there any way to understand what happened? The ‘Logging’ page on the web interface was completed empty, but after reboot is now showing log events again but nothing prior to the reboot.
You must enable logging of a lte topic to see all events.
Good idea is update a RouterOS and MODEM itself, he have got own separate firmware update.
# Check your and latest firmware version
/interface lte firmware-upgrade lte1
# Do upgrade by:
/interface lte firmware-upgrade lte1 upgrade=yes
and
/system logging action remove [find where name=support]
/system logging action add name=support target=memory memory-lines=16384
/system logging remove [find where topics~"lte"]
/system logging add action=support topics=lte
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