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LTE-M network not found with nrf9160 and modem firmware version 1.0.0

Andrea

I have two nrf9160, one with modem firmware 0.7.29-alpha and the other with modem firmware 1.0.0. With the latest firmware the search for LTE-M network fails while with the old firmware it works. How can I debug this? Is there a way to downgrade the modem firmware?

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  • 0

    Hello,

     

    Is there a way to downgrade the modem firmware?

     No, it's not possible.

     

    How can I debug this?

     Please do a modem trace as explained here, and post the lte link monitor log as well.

  • 0 in reply to Hakon

    Fullscreen 3058.2019-07-18T09_07_59.923Z-log.txt Download 
    2019-07-18T09:08:01.376Z INFO Application data folder: C:\Users\user\AppData\Roaming\nrfconnect\pc-nrfconnect-linkmonitor
2019-07-18T09:08:03.989Z DEBUG App pc-nrfconnect-linkmonitor v1.0.0 official
2019-07-18T09:08:03.989Z DEBUG App path: C:\Users\user\.nrfconnect-apps\node_modules\pc-nrfconnect-linkmonitor
2019-07-18T09:08:03.989Z DEBUG nRFConnect 3.0.0 is supported by the app (^3.0.0)
2019-07-18T09:08:03.989Z DEBUG nRFConnect path: C:\Users\user\AppData\Local\Programs\nrfconnect\resources\app.asar
2019-07-18T09:08:03.989Z DEBUG HomeDir: C:\Users\user
2019-07-18T09:08:03.989Z DEBUG TmpDir: C:\Users\user\AppData\Local\Temp
2019-07-18T09:08:04.016Z VERBOSE Could not fetch serial number for serial port at COM3
2019-07-18T09:08:14.173Z INFO Modem port is opened
2019-07-18T09:08:14.179Z DEBUG modem >> AT+CFUN?\x0D\x0A
2019-07-18T09:08:14.227Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:29.205Z DEBUG modem >> AT+CFUN?\x0D\x0A
2019-07-18T09:08:29.212Z DEBUG modem << +CFUN: 4\x0D\x0A
2019-07-18T09:08:29.244Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:29.252Z DEBUG modem >> AT+CFUN=1\x0D\x0A
2019-07-18T09:08:29.309Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.021Z DEBUG modem >> AT+CFUN?\x0D\x0A
2019-07-18T09:08:36.029Z DEBUG modem << +CFUN: 1\x0D\x0A
2019-07-18T09:08:36.041Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.045Z DEBUG modem >> AT+CGSN=1\x0D\x0A
2019-07-18T09:08:36.059Z DEBUG modem << +CGSN: "352656100158818"\x0D\x0A
2019-07-18T09:08:36.063Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.070Z DEBUG modem >> AT+CGMI\x0D\x0A
2019-07-18T09:08:36.082Z DEBUG modem << Nordic Semiconductor ASA\x0D\x0A
2019-07-18T09:08:36.084Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.093Z DEBUG modem >> AT+CGMM\x0D\x0A
2019-07-18T09:08:36.101Z DEBUG modem << nRF9160-SICA\x0D\x0A
2019-07-18T09:08:36.109Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.113Z DEBUG modem >> AT+CGMR\x0D\x0A
2019-07-18T09:08:36.124Z DEBUG modem << mfw_nrf9160_1.0.0\x0D\x0A
2019-07-18T09:08:36.127Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.128Z INFO Nordic Semiconductor ASA nRF9160-SICA [mfw_nrf9160_1.0.0] SerNr: 352656100158818
2019-07-18T09:08:36.131Z DEBUG modem >> AT+CEMODE?\x0D\x0A
2019-07-18T09:08:36.165Z DEBUG modem << +CEMODE: 2\x0D\x0A
2019-07-18T09:08:36.169Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.182Z DEBUG modem >> AT%XCBAND=?\x0D\x0A
2019-07-18T09:08:36.204Z DEBUG modem << %XCBAND: (1,2,3,4,5,8,12,13,14,17,18,19,20,25,26,28,66)\x0D\x0A
2019-07-18T09:08:36.206Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.221Z DEBUG modem >> AT+CMEE?\x0D\x0A
2019-07-18T09:08:36.232Z DEBUG modem << +CMEE: 0\x0D\x0A
2019-07-18T09:08:36.235Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.244Z DEBUG modem >> AT+CMEE=1\x0D\x0A
2019-07-18T09:08:36.250Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.260Z DEBUG modem >> AT+CNEC?\x0D\x0A
2019-07-18T09:08:36.267Z DEBUG modem << +CNEC: 0\x0D\x0A
2019-07-18T09:08:36.276Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.293Z DEBUG modem >> AT+CNEC=24\x0D\x0A
2019-07-18T09:08:36.300Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.309Z DEBUG modem >> AT+CGEREP?\x0D\x0A
2019-07-18T09:08:36.315Z DEBUG modem << +CGEREP: 0,0\x0D
2019-07-18T09:08:36.327Z DEBUG modem << \x0A
2019-07-18T09:08:36.328Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.334Z DEBUG modem >> AT+CGDCONT?\x0D\x0A
2019-07-18T09:08:36.343Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.348Z DEBUG modem >> AT+CGACT?\x0D\x0A
2019-07-18T09:08:36.358Z DEBUG modem << OK\x0D\x0A
2019-07-18T09:08:36.361Z DEBUG modem >> AT+CGEREP=1\x0D\x0A
2019-07-18T09:08:36.368Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.377Z DEBUG modem >> AT+CIND=1,1,1\x0D\x0A
2019-07-18T09:08:36.383Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.393Z DEBUG modem >> AT+CEREG=2\x0D\x0A
2019-07-18T09:08:36.400Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.410Z DEBUG modem >> AT+CEREG?\x0D\x0A
2019-07-18T09:08:36.428Z DEBUG modem << +CEREG: 2,4,"FFFE","FFFFFFFF",7\x0D\x0A
2019-07-18T09:08:36.430Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.447Z DEBUG modem >> AT%CESQ=1\x0D\x0A
2019-07-18T09:08:36.459Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.463Z DEBUG modem >> AT+CESQ\x0D\x0A
2019-07-18T09:08:36.476Z DEBUG modem << +CESQ: 99,99,255,255,255,255\x0D\x0A
2019-07-18T09:08:36.478Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.495Z DEBUG modem >> AT%XSIM=1\x0D\x0A
2019-07-18T09:08:36.502Z DEBUG modem << OK\x0D
2019-07-18T09:08:36.515Z DEBUG modem >> AT%XSIM?\x0D\x0A
2019-07-18T09:08:36.529Z DEBUG modem << %XSIM: 1\x0D\x0A
2019-07-18T09:08:36.532Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.548Z DEBUG modem >> AT+CPIN?\x0D\x0A
2019-07-18T09:08:36.561Z DEBUG modem << +CPIN: READY\x0D\x0A
2019-07-18T09:08:36.562Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.575Z DEBUG modem >> AT+CPINR="SIM PIN"\x0D\x0A
2019-07-18T09:08:36.592Z DEBUG modem << +CPINR: "SIM PIN",3\x0D\x0A
2019-07-18T09:08:36.595Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.610Z DEBUG modem >> AT+CIMI\x0D\x0A
2019-07-18T09:08:36.624Z DEBUG modem << 204080813519025\x0D\x0A
2019-07-18T09:08:36.626Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:08:36.628Z INFO IMSIdentity: 204080813519025
2019-07-18T09:09:21.374Z DEBUG modem >> AT+CFUN?\x0D\x0A
2019-07-18T09:09:21.382Z DEBUG modem << +CFUN: 1\x0D\x0A
2019-07-18T09:09:21.395Z DEBUG modem << OK\x0D
2019-07-18T09:09:21.413Z DEBUG modem >> AT+CGSN=1\x0D\x0A
2019-07-18T09:09:21.426Z DEBUG modem << +CGSN: "352656100158818"\x0D\x0A
2019-07-18T09:09:21.428Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:09:21.433Z DEBUG modem >> AT+CGMI\x0D\x0A
2019-07-18T09:09:21.445Z DEBUG modem << Nordic Semiconductor ASA\x0D\x0A
2019-07-18T09:09:21.446Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:09:21.451Z DEBUG modem >> AT+CGMM\x0D\x0A
2019-07-18T09:09:21.462Z DEBUG modem << nRF9160-SICA\x0D\x0A
2019-07-18T09:09:21.464Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:09:21.468Z DEBUG modem >> AT+CGMR\x0D\x0A
2019-07-18T09:09:21.479Z DEBUG modem << mfw_nrf9160_1.0.0\x0D\x0A
2019-07-18T09:09:21.481Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:09:21.484Z INFO Nordic Semiconductor ASA nRF9160-SICA [mfw_nrf9160_1.0.0] SerNr: 352656100158818
2019-07-18T09:09:21.494Z DEBUG modem >> AT+CEMODE?\x0D\x0A
2019-07-18T09:09:21.502Z DEBUG modem << +CEMODE: 2\x0D\x0A
2019-07-18T09:09:21.507Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:09:21.526Z DEBUG modem >> AT%XCBAND=?\x0D\x0A
2019-07-18T09:09:21.545Z DEBUG modem << %XCBAND: (1,2,3,4,5,8,12,13,14,17,18,19,20,25,26,28,66)\x0D\x0A
2019-07-18T09:09:21.546Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:09:21.551Z DEBUG modem >> AT+CMEE?\x0D\x0A
2019-07-18T09:09:21.563Z DEBUG modem << +CMEE: 1\x0D\x0A
2019-07-18T09:09:21.565Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:09:21.577Z DEBUG modem >> AT+CNEC?\x0D\x0A
2019-07-18T09:09:21.582Z DEBUG modem << +CNEC: 24\x0D\x0A
2019-07-18T09:09:21.584Z DEBUG modem << OK\x0D
2019-07-18T09:09:21.595Z DEBUG modem >> AT+CGEREP?\x0D\x0A
2019-07-18T09:09:21.608Z DEBUG modem << +CGEREP: 1,0\x0D\x0A
2019-07-18T09:09:21.609Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:09:21.612Z DEBUG modem >> AT+CIND=1,1,1\x0D\x0A
2019-07-18T09:09:21.618Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:09:21.629Z DEBUG modem >> AT+CEREG=2\x0D\x0A
2019-07-18T09:09:21.646Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:09:21.649Z DEBUG modem >> AT+CEREG?\x0D\x0A
2019-07-18T09:09:21.661Z DEBUG modem << +CEREG: 2,4,"FFFE","FFFFFFFF",7\x0D\x0A
2019-07-18T09:09:21.663Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:09:21.674Z DEBUG modem >> AT%CESQ=1\x0D\x0A
2019-07-18T09:09:21.684Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:09:21.695Z DEBUG modem >> AT+CESQ\x0D\x0A
2019-07-18T09:09:21.708Z DEBUG modem << +CESQ: 99,99,255,255,255,255\x0D\x0A
2019-07-18T09:09:21.710Z DEBUG modem << OK\x0D\x0A
2019-07-18T09:09:21.715Z DEBUG modem >> AT%XSIM=1\x0D\x0A
2019-07-18T09:09:21.729Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:09:21.732Z DEBUG modem >> AT%XSIM?\x0D\x0A
2019-07-18T09:09:21.744Z DEBUG modem << %XSIM: 1\x0D\x0A
2019-07-18T09:09:21.746Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:09:21.762Z DEBUG modem >> AT+CPIN?\x0D\x0A
2019-07-18T09:09:21.768Z DEBUG modem << +CPIN: READY\x0D\x0A
2019-07-18T09:09:21.771Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:09:21.787Z DEBUG modem >> AT+CPINR="SIM PIN"\x0D\x0A
2019-07-18T09:09:21.800Z DEBUG modem << +CPINR: "SIM PIN",3\x0D\x0A
2019-07-18T09:09:21.801Z DEBUG modem << OK\x0D\x0A
2019-07-18T09:09:21.817Z DEBUG modem >> AT+CIMI\x0D\x0A
2019-07-18T09:09:21.829Z DEBUG modem << 204080813519025\x0D\x0A
2019-07-18T09:09:21.831Z DEBUG modem << OK\x0D\x0A\x00
2019-07-18T09:09:21.832Z INFO IMSIdentity: 204080813519025
2019-07-18T09:09:27.796Z DEBUG modem >> AT+COPS=?\x0D\x0A
2019-07-18T09:10:01.359Z DEBUG modem << ERROR\x0D\x0A\x00
2019-07-18T09:10:01.362Z ERROR Network search failed: Error: AT+COPS=?
 failed
2019-07-18T09:10:01.371Z DEBUG modem << %CESQ: 42,2\x0D\x0A\x00
2019-07-18T09:10:04.234Z DEBUG modem << +CGEV: ME PDN ACT 0,0\x0D\x0A\x00
2019-07-18T09:10:04.249Z DEBUG modem >> AT+CGDCONT?\x0D\x0A
2019-07-18T09:10:04.251Z DEBUG modem << +CNEC_ESM: 50,0\x0D\x0A\x00
2019-07-18T09:10:04.253Z DEBUG modem << +CEREG: 5,"01B0","07F1126E",7\x0D\x0A\x00
2019-07-18T09:10:04.256Z DEBUG modem << +CIND: "service",1\x0D\x0A\x00
2019-07-18T09:10:04.272Z DEBUG modem << +CIND: "roam",1\x0D\x0A\x00

    trace-2019-07-18T09-08-10.085Z.bin

  • 0 in reply to Andrea

    Just looking at your modem output, I noticed two things.

    You haven't called XSYSTEMMODE before starting the modem, you should probably do that to check what mode of operation the modem is in. It should default to LTE-M but better to be sure.

    Secondly, you are connected to the network. The final commands outputted in your log had CEREG: 5 with an eNodeB identification hex. Your DK seems to have registered with your local cell tower.

Reply
  • 0 in reply to Andrea

    Just looking at your modem output, I noticed two things.

    You haven't called XSYSTEMMODE before starting the modem, you should probably do that to check what mode of operation the modem is in. It should default to LTE-M but better to be sure.

    Secondly, you are connected to the network. The final commands outputted in your log had CEREG: 5 with an eNodeB identification hex. Your DK seems to have registered with your local cell tower.

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