firmware 8.2.0 br1mini cellular wan: no device detected

BR1 mini LTEA was running firmware 8.1.3 build 5077 with no issues.

Upgraded tonight to firmware 8.2.0 build 5167 and upon reboot, wan cellular shows “no device detected”

What should I do to resolve this?

Rebooted again and it is fine now. Not sure what caused that.