I have a Quectel EC21 Mini PCI based board.
Upon running the ATI command it says this as firmware version,
I am facing issues in connecting to the AWS - MQTT.
I have verified all my certificates to be correct and it works with the Python PAHO packages on my system.
But with the EC-21 after referring to the relevant MQTT application notes doing as per it always results in the AWS-IoT being not connected.
The issue is something similar to this topic, but not sure whether any resolution was provided.
Do I need to upgrade the firmware on the EC-21 module here?
Let me know how can we resolve this issue?