EC25-E, EC25-G, Firmware update

[ljmlin]

Thanks!!!

Can you care this problem as well?

EC25, LTE, +QMTOPEN: 0,-1 Issue

Hi there, I am developing MQTTS Logic using EC25-E. However, when MQTT is open, +QMTOPEN: 0,-1 is obtained and the connect is also impossible. It seems to be a problem that many people have encountered in the past, but I haven’t been able to find a solution. So my question is… How can I update the latest firmware for EC25-E? The final destination is Google IoT Core (GCP), and I have only the client_key. Many devices communicated only with the client_key, is it okay not to input CA_cert and…