Hi,

I know this was changed just recently, but the new pre_init string doesn't work with my modem:

2017-05-02 11:01:18,5, GSM1: Using check_memory_method 1: CPMS is used. 2017-05-02 11:01:18,6, GSM1: Checking device for incoming SMS 2017-05-02 11:01:18,6, GSM1: Checking if modem is ready 2017-05-02 11:01:19,7, GSM1: -> AT 2017-05-02 11:01:19,7, GSM1: Command is sent, waiting for the answer. (5) 2017-05-02 11:01:19,7, GSM1: <- AT OK 2017-05-02 11:01:19,6, GSM1: Pre-initializing modem 2017-05-02 11:01:19,7, GSM1: -> ATE0;+CMEE=1;+CREG=2 2017-05-02 11:01:19,7, GSM1: Command is sent, waiting for the answer. (10) 2017-05-02 11:01:19,7, GSM1: <- ATE0;+CMEE=1;+CREG=2 ERROR 2017-05-02 11:01:19,3, GSM1: Modem did not accept the pre-init string

However this works:
2017-05-03 11:52:57,5, GSM1: Using check_memory_method 1: CPMS is used. 2017-05-03 11:52:57,6, GSM1: Checking device for incoming SMS 2017-05-03 11:52:57,6, GSM1: Checking if modem is ready 2017-05-03 11:52:58,7, GSM1: -> AT 2017-05-03 11:52:58,7, GSM1: Command is sent, waiting for the answer. (5) 2017-05-03 11:52:58,7, GSM1: <- OK 2017-05-03 11:52:58,6, GSM1: Pre-initializing modem 2017-05-03 11:52:58,7, GSM1: -> ATE0+CMEE=1;+CREG=2 2017-05-03 11:52:58,7, GSM1: Command is sent, waiting for the answer. (10) 2017-05-03 11:52:58,7, GSM1: <- OK

Thanks for reporting this bug.

This is fixed in the 3.1.21 which will be released soon. Semicolon was a failure, even when it worked with many devices. However, next version does not combine "echo off" and extended commands anymore.

3.1.21 is now available for download.