Attachments (0)
Nordic Case Info
  • Case ID: 276137
Options
This post is older than 2 years and might not be relevant anymore
More Info: Consider searching for newer posts

Nordic Thingy:91 - Can't connect to nRF Cloud

Luca Z

Hello,

I recently got my hands on a Nordic Thingy:91. Following every steps of the User Guide with no harm until the nRF Connect for Cloud connection (step 7.4.). The LED on the device is blinking yellow and when I enter the device info for registration on nRF Cloud I get error code 40412.

I went through the possible reasons :

  1. I double checked IMEI and PIN codes on my device .
  2. I attempted association once the LED was yellow (is this the correct color with fw versions I flashed ? See below version)
  3. Is the modem version I used corrupted ?
  4. I updated the device certificate for the Cloud registration
  5. The area I'm in has LTE-M coverage as I'm working on another project with LTE-M connectivity.

 

Some inputs that may help troubleshooting the issue :

  • I am in Paris, France - country covered by iBasis for LTE-M
  • I flashed the following files by USB with nRF Connect Programmer :
    • Nrf52 application on nRF52940 : thingy91_nrf52_connectivity_bridge_2021-06-28_7a076c22.hex
    • Modem firmware on nRF9160 : mfw_nrf9160_1.3.0.zip
    • Modem application on nRF9160: thingy91_asset_tracker_v2_ltem_2021-06-28_7a076c22.hex
  • After flashing the modem application the LED passed from off to blinking yellow for several minutes, then blinking purple for about a minute then blinking blue for about a minute. At some point it loops between blinking purple and blinking blue.
  • I tried with 2 devices : same result
  • I updated the device certificate
  • I have not connected external antennas (LTE-M or GNSS)

 

Also with LTE Link Monitor I captured some logs :

 

 

Fullscreen
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
2021-09-07T14:01:59.265Z INFO Application data folder: C:\Users\Luca\AppData\Roaming\nrfconnect\pc-nrfconnect-linkmonitor
2021-09-07T14:01:59.374Z DEBUG App pc-nrfconnect-linkmonitor v1.1.10 official
2021-09-07T14:01:59.375Z DEBUG App path: C:\Users\Luca\.nrfconnect-apps\node_modules\pc-nrfconnect-linkmonitor
2021-09-07T14:01:59.375Z DEBUG nRFConnect 3.7.0, required by the app is (^3.6.0)
2021-09-07T14:01:59.375Z DEBUG nRFConnect path: C:\Users\Luca\AppData\Local\Programs\nrfconnect\resources\app.asar
2021-09-07T14:01:59.376Z DEBUG HomeDir: C:\Users\Luca
2021-09-07T14:01:59.376Z DEBUG TmpDir: C:\Users\Luca\AppData\Local\Temp
2021-09-07T14:02:03.046Z INFO Modem port is opened
2021-09-07T14:02:14.025Z DEBUG modem << %CESQ: 50,2,9,1
2021-09-07T14:02:21.536Z DEBUG modem << %CESQ: 255,0,255,0
2021-09-07T14:02:21.586Z DEBUG modem << %CESQ: 66,3,13,1
2021-09-07T14:02:21.616Z DEBUG modem << +CEREG: 2,"C841","01707A06",7
2021-09-07T14:02:21.651Z DEBUG modem << [00:00:48.784,393] [0m<inf> event_manager: MODEM_EVT_LTE_CELL_UPDATE[0m
2021-09-07T14:02:21.755Z DEBUG modem << +CSCON: 1
2021-09-07T14:02:21.764Z DEBUG modem << %CESQ: 65,3,19,2
2021-09-07T14:02:23.147Z DEBUG modem << +CEREG: 2,"C841","01707A06",7,0,19
2021-09-07T14:02:24.395Z DEBUG modem << +CSCON: 0
2021-09-07T14:02:32.580Z DEBUG modem << %CESQ: 66,3,13,1
2021-09-07T14:03:05.071Z INFO Modem port is opened
2021-09-07T14:03:35.558Z DEBUG modem << %CESQ: 66,3,16,2
2021-09-07T14:03:35.582Z DEBUG modem << +CEREG: 2,"C841","01707A06",7
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

 

I will try another SIM card as I read on similar posts that iBasis SIM might not work well everywhere.

In the meanwhile, any help will be highly appreciated.

Luca

Terms of service