We are using SARA AFF R4 12 for connection to the 2G. Using micro USB port for the communication We are trying to send AT commands from the serial monitor but it is not working at all. My question is that:
Is it necessary to download u-blox firmware when we are using Arduino IDE? Can we just directly connect the board to the PC and using PASSThrough example in Arduino Ide ?
Is it possible to use AT Commands in Putty software for registration of the sim?