LTE modem inactive after upgrade

RouterOS
1

Hi

I”ve made and upgrade to long-term 7.20.7 and upgrade of the LTE modem firmware. I’ve lost the connection and now the modem stays “inactive” and I can’t even disable it.

Probably the firmware upgrade failed or so. How to deal with it please?

UPD seems that I have at least 2 same devices with the same problems. I’ve upgraded about 60 different mikrotiks and now I got the 2 dead, maybe more

2

I've written this a thousand times already:

Bad idea to update en masse.
Bad idea to update to a newly released version.
Bad idea to update without do tests for 2-3 months.
Bad idea to update if it worked before.
Bad idea to rely solely on the LT label... It's not "long-testing."