Most AT commands return ERROR

[flau]

Hi, I have a custom board built around a nRF9160.  All GPIO (P0.xx) work.  However, when I test with the at_client only AT+CGSN=1, AT+CGMI, AT+CGMM and AT+CGMR return with the expected string.  All other commands return "ERROR".  Any suggestions are very much appreciated.

[Albrecht Markus Schellenberger]

Hello Floyd,

flau said:

Is the LTE Link Monitor only worked with the nRF9160DK?  Can I use it with my custom board?  I only see COM6,7,8 for nRF9160DK under the modem port selection.

Yes, you can use the LTE Link Monitor with your custom board :-) If you see 3 JLink UART ports it normally is a good sign.

Which modem firmware is flashed to the nRF9160 of your custom board? Are you able to run through the Testing procedure I mentioned?

Regards,

Markus