RC7620-1 sends an ERROR response if using 4G SIM

IoT Modules RC76
8

OK. I have never captured qxdm logs.
I assume these are valid instructions for RC7620-1:

https://source.sierrawireless.com/resources/airprime/software/mbpl/mbpl-software-latest/#sthash.ZXRwiiKx.6tzg5lpm.dpbs

I am controlling RC7620-1 with an embedded MCU via USB interface, and it is not easy to replace the MCU with a Linux workstation.
Let’s see if I have time to study this deeper …