@jerdung I tried switching from the latest GENERIC to the AT&T and then the VERIZON and back to GENERIC and still see the same behavior. I am using AWS as a CBRS provider and am able to connect on other devices (including sierra) so I expect everything is OK with the SIM and network. Just seems like this module isn’t allowing me to scan B48.
Based on some other forum posts:
Looks like early samples didn’t include B48 intentionally and there is an updater tool to enable it. Since this unit was in a batch of early engineering units I speculate it is old. Any way to get ahold of the updater?