You can find the specific v1.04 manuals and related "hot" software updates at the following locations: SIM7000 Series : The v1.04 AT Command Manual is available via SIMCom's official document repository A76XX Series : The v1.04 manual for this series can be found on or developer wikis like Firmware/Hotfixes

: Write and run sequences of AT commands at once.

To help you get the exact version you need, could you tell me:

Regularly audit your V104 system to ensure no unauthorized third-party scripts have been injected into the control loop.