I try to connect this modem with Zelio Logic PLC for the sending SMS. Before I already connected original Shneider Electric Modem(SR2MOD02, on chip - Wavecom Q2687) and Fargo maestro m100 2g on chip SL6087, so i thought that all wavecom modem will be working with Zelio. I bought on Aliexpress m1306b on chip q2303(2c2). Someone can connected m1306b on chip Q2406b with Zelio. And someone say that software from Q2406b compatible with chip q2303(2c2) http://djawir.com/threads/62799/ that’s right?. Firmware files i found on this site http://www.sendsms.cn/old/download/wavecom/%d7%ee%d0%c2%c8%ed%bc%fe/
The base files might be compatible but the configuration ones certainly won’t be. I do not think changing the firmware on your device will resolve the issue with your system.