Quectel MC60, AT command not response any AT command, LED blink every second

IoT Modules GSM Module
1

hello, i’am new about quectel MC60, the Quectel MC60 not response any AT command, LED blink every second.. what should I do?
Thank you…

2

Could you please tell me which port did you select for sending AT command?

3

this problem solved.. thankyou..

4

How did you solve? I have the same problem.