LTE Band 7 does not work with R16.3 (Generic — GCF)

i think digikey will still provide support if you have significant amount of business

root@swi-mdm9x28-wp:~# microcom /dev/ttyAT
AT!IMPREF?
!IMPREF:
preferred fw version: 02.37.06.05
preferred carrier name: GENERIC
preferred config name: GENERIC_002.121_002
preferred subpri index: 000
current fw version: 02.37.06.05
current carrier name: GENERIC
current config name: GENERIC_002.121_002
current subpri index: 000

OK

digitkey does not provide any support. is there any escalation path we can do to proceed?

how about this one?

Thanks. I will try that