hello, I loaded the three “radio” files and the “startup” file by deleting the originals as said in the help, then I asked for identifiers which I decoded and put them in the file " data" then I registered the module in the sigfox backend, do I need to modify the “radio_board” files if so how? THANKS
radio files and startup are enough.
once compiled and loaded, try an AT$ID and AT$PAC to check crendetials there 
hello, after compiling the program in BIN and uploading it to the module, I opened a serial console, but nothing happens, it’s empty and the AT commands don’t give anything either, for your information I’m using a “usb to ttl” to communicate with the module on the UART2 pin of the RAK3172
uart2 @9600 8N1 should be the port in use. on 19007 base board you could also use the USB…